{
    "atomes": [
        {
            "atomicNumber": 1,
            "symbol": "H",
            "name": "Hydrogen",
            "protons": 1,
            "neutrons": 0,
            "properties": {
              "yeardiscovered": "1766",
              "atomicmass": "1.008",
              "standardstate": "gas",
              "groupblock": "nonmetal",
              "discovered_by": "Henry Cavendish",
              "named_by": "Antoine Lavoisier"
            },
            "representation": {
              "color": "#ffffff"
            }
          },
          {
            "atomicNumber": 2,
            "symbol": "He",
            "name": "Helium",
            "protons": 2,
            "neutrons": 2,
            "properties": {
              "yeardiscovered": "1868",
              "atomicmass": "4.0026",
              "standardstate": "gas",
              "groupblock": "noble gas",
              "discovered_by": "Pierre Janssen, Norman Lockyer",
              "named_by": null
            },
            "representation": {
              "color": "#d9ebf7"
            }
          },
          {
            "atomicNumber": 3,
            "symbol": "Li",
            "name": "Lithium",
            "protons": 3,
            "neutrons": 4,
            "properties": {
              "yeardiscovered": "1817",
              "atomicmass": "6.94",
              "standardstate": "solid",
              "groupblock": "alkali metal",
              "discovered_by": "Johan August Arfwedson",
              "named_by": null
            },
            "representation": {
              "color": "#cc80ff"
            }
          },
          {
            "atomicNumber": 4,
            "symbol": "Be",
            "name": "Beryllium",
            "protons": 4,
            "neutrons": 5,
            "properties": {
              "yeardiscovered": "1798",
              "atomicmass": "9.0122",
              "standardstate": "solid",
              "groupblock": "alkaline earth metal",
              "discovered_by": "Louis Nicolas Vauquelin",
              "named_by": null
            },
            "representation": {
              "color": "#d9ffb3"
            }
          },
          {
            "atomicNumber": 5,
            "symbol": "B",
            "name": "Boron",
            "protons": 5,
            "neutrons": 6,
            "properties": {
              "yeardiscovered": "1808",
              "atomicmass": "10.81",
              "standardstate": "solid",
              "groupblock": "metalloid",
              "discovered_by": "Sir Humphry Davy, Jöns Jakob Berzelius",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 6,
            "symbol": "C",
            "name": "Carbon",
            "protons": 6,
            "neutrons": 6,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "12.011",
              "standardstate": "solid",
              "groupblock": "nonmetal",
              "discovered_by": "Unknown",
              "named_by": null
            },
            "representation": {
              "color": "#666666"
            }
          },
          {
            "atomicNumber": 7,
            "symbol": "N",
            "name": "Nitrogen",
            "protons": 7,
            "neutrons": 7,
            "properties": {
              "yeardiscovered": "1772",
              "atomicmass": "14.007",
              "standardstate": "gas",
              "groupblock": "nonmetal",
              "discovered_by": "Daniel Rutherford",
              "named_by": null
            },
            "representation": {
              "color": "#4d4dff"
            }
          },
          {
            "atomicNumber": 8,
            "symbol": "O",
            "name": "Oxygen",
            "protons": 8,
            "neutrons": 8,
            "properties": {
              "yeardiscovered": "1774",
              "atomicmass": "15.999",
              "standardstate": "gas",
              "groupblock": "nonmetal",
              "discovered_by": "Joseph Priestley",
              "named_by": null
            },
            "representation": {
              "color": "#ff4d4d"
            }
          },
          {
            "atomicNumber": 9,
            "symbol": "F",
            "name": "Fluorine",
            "protons": 9,
            "neutrons": 10,
            "properties": {
              "yeardiscovered": "1670",
              "atomicmass": "18.998",
              "standardstate": "gas",
              "groupblock": "halogen",
              "discovered_by": "André-Marie Ampère",
              "named_by": null
            },
            "representation": {
              "color": "#99ffcc"
            }
          },
          {
            "atomicNumber": 10,
            "symbol": "Ne",
            "name": "Neon",
            "protons": 10,
            "neutrons": 10,
            "properties": {
              "yeardiscovered": "1898",
              "atomicmass": "20.180",
              "standardstate": "gas",
              "groupblock": "noble gas",
              "discovered_by": "Sir William Ramsay, Morris Travers",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 11,
            "symbol": "Na",
            "name": "Sodium",
            "protons": 11,
            "neutrons": 12,
            "properties": {
              "yeardiscovered": "1807",
              "atomicmass": "22.990",
              "standardstate": "solid",
              "groupblock": "alkali metal",
              "discovered_by": "Sir Humphry Davy",
              "named_by": null
            },
            "representation": {
              "color": "#ffcc99"
            }
          },
          {
            "atomicNumber": 12,
            "symbol": "Mg",
            "name": "Magnesium",
            "protons": 12,
            "neutrons": 12,
            "properties": {
              "yeardiscovered": "1808",
              "atomicmass": "24.305",
              "standardstate": "solid",
              "groupblock": "alkaline earth metal",
              "discovered_by": "Sir Humphry Davy",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 13,
            "symbol": "Al",
            "name": "Aluminum",
            "protons": 13,
            "neutrons": 14,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "26.982",
              "standardstate": "solid",
              "groupblock": "post-transition metal",
              "discovered_by": null,
              "named_by": null
            },
            "representation": {
              "color": "#999999"
            }
          },
          {
            "atomicNumber": 14,
            "symbol": "Si",
            "name": "Silicon",
            "protons": 14,
            "neutrons": 14,
            "properties": {
              "yeardiscovered": "1823",
              "atomicmass": "28.085",
              "standardstate": "solid",
              "groupblock": "metalloid",
              "discovered_by": "Jöns Jakob Berzelius",
              "named_by": "Thomas Thomson"
            },
            "representation": {
              "color": "#ffcc66"
            }
          },
          {
            "atomicNumber": 15,
            "symbol": "P",
            "name": "Phosphorus",
            "protons": 15,
            "neutrons": 16,
            "properties": {
              "yeardiscovered": "1669",
              "atomicmass": "30.974",
              "standardstate": "solid",
              "groupblock": "nonmetal",
              "discovered_by": "Hennig Brand",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 16,
            "symbol": "S",
            "name": "Sulfur",
            "protons": 16,
            "neutrons": 16,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "32.06",
              "standardstate": "solid",
              "groupblock": "nonmetal",
              "discovered_by": null,
              "named_by": null
            },
            "representation": {
              "color": "#d9ff66"
            }
          },
          {
            "atomicNumber": 17,
            "symbol": "Cl",
            "name": "Chlorine",
            "protons": 17,
            "neutrons": 18,
            "properties": {
              "yeardiscovered": "1774",
              "atomicmass": "35.45",
              "standardstate": "gas",
              "groupblock": "halogen",
              "discovered_by": "Carl Wilhelm Scheele",
              "named_by": null
            },
            "representation": {
              "color": "#66ff66"
            }
          },
          {
            "atomicNumber": 18,
            "symbol": "Ar",
            "name": "Argon",
            "protons": 18,
            "neutrons": 22,
            "properties": {
              "yeardiscovered": "1894",
              "atomicmass": "39.948",
              "standardstate": "gas",
              "groupblock": "noble gas",
              "discovered_by": "Sir William Ramsay, Lord Rayleigh",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 19,
            "symbol": "K",
            "name": "Potassium",
            "protons": 19,
            "neutrons": 20,
            "properties": {
              "yeardiscovered": "1807",
              "atomicmass": "39.098",
              "standardstate": "solid",
              "groupblock": "alkali metal",
              "discovered_by": "Sir Humphry Davy",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 20,
            "symbol": "Ca",
            "name": "Calcium",
            "protons": 20,
            "neutrons": 20,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "40.078",
              "standardstate": "solid",
              "groupblock": "alkaline earth metal",
              "discovered_by": "Humphry Davy",
              "named_by": null
            },
            "representation": {
              "color": "#99ccff"
            }
          },
          {
            "atomicNumber": 21,
            "symbol": "Sc",
            "name": "Scandium",
            "protons": 21,
            "neutrons": 24,
            "properties": {
              "yeardiscovered": "1879",
              "atomicmass": "44.956",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Lars Fredrik Nilson",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 22,
            "symbol": "Ti",
            "name": "Titanium",
            "protons": 22,
            "neutrons": 26,
            "properties": {
              "yeardiscovered": "1791",
              "atomicmass": "47.867",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "William Gregor",
              "named_by": "Martin Heinrich Klaproth"
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 23,
            "symbol": "V",
            "name": "Vanadium",
            "protons": 23,
            "neutrons": 28,
            "properties": {
              "yeardiscovered": "1801",
              "atomicmass": "50.942",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Andrés Manuel del Río",
              "named_by": "Nils Gabriel Sefström"
            },
            "representation": {
              "color": "#99ffcc"
            }
          },
          {
            "atomicNumber": 24,
            "symbol": "Cr",
            "name": "Chromium",
            "protons": 24,
            "neutrons": 28,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "51.996",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 25,
            "symbol": "Mn",
            "name": "Manganese",
            "protons": 25,
            "neutrons": 30,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "54.938",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 26,
            "symbol": "Fe",
            "name": "Iron",
            "protons": 26,
            "neutrons": 30,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "55.845",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#e68a00"
            }
          },
          {
            "atomicNumber": 27,
            "symbol": "Co",
            "name": "Cobalt",
            "protons": 27,
            "neutrons": 32,
            "properties": {
              "yeardiscovered": "1735",
              "atomicmass": "58.933",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Georg Brandt",
              "named_by": null
            },
            "representation": {
              "color": "#999999"
            }
          },
          {
            "atomicNumber": 28,
            "symbol": "Ni",
            "name": "Nickel",
            "protons": 28,
            "neutrons": 31,
            "properties": {
              "yeardiscovered": "1751",
              "atomicmass": "58.693",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Axel Fredrik Cronstedt",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 29,
            "symbol": "Cu",
            "name": "Copper",
            "protons": 29,
            "neutrons": 35,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "63.546",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 30,
            "symbol": "Zn",
            "name": "Zinc",
            "protons": 30,
            "neutrons": 35,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "65.38",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#ffcc99"
            }
          },
          {
            "atomicNumber": 31,
            "symbol": "Ga",
            "name": "Gallium",
            "protons": 31,
            "neutrons": 39,
            "properties": {
              "yeardiscovered": "1875",
              "atomicmass": "69.723",
              "standardstate": "solid",
              "groupblock": "post-transition metal",
              "discovered_by": "Lecoq de Boisbaudran",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 32,
            "symbol": "Ge",
            "name": "Germanium",
            "protons": 32,
            "neutrons": 41,
            "properties": {
              "yeardiscovered": "1886",
              "atomicmass": "72.630",
              "standardstate": "solid",
              "groupblock": "metalloid",
              "discovered_by": "Clemens Winkler",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 33,
            "symbol": "As",
            "name": "Arsenic",
            "protons": 33,
            "neutrons": 42,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "74.922",
              "standardstate": "solid",
              "groupblock": "metalloid",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 34,
            "symbol": "Se",
            "name": "Selenium",
            "protons": 34,
            "neutrons": 45,
            "properties": {
              "yeardiscovered": "1817",
              "atomicmass": "78.971",
              "standardstate": "solid",
              "groupblock": "nonmetal",
              "discovered_by": "Jöns Jakob Berzelius",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 35,
            "symbol": "Br",
            "name": "Bromine",
            "protons": 35,
            "neutrons": 45,
            "properties": {
              "yeardiscovered": "1826",
              "atomicmass": "79.904",
              "standardstate": "liquid",
              "groupblock": "halogen",
              "discovered_by": "Antoine Jérôme Balard",
              "named_by": null
            },
            "representation": {
              "color": "#e6e600"
            }
          },
          {
            "atomicNumber": 36,
            "symbol": "Kr",
            "name": "Krypton",
            "protons": 36,
            "neutrons": 48,
            "properties": {
              "yeardiscovered": "1898",
              "atomicmass": "83.798",
              "standardstate": "gas",
              "groupblock": "noble gas",
              "discovered_by": "Sir William Ramsay, Morris Travers",
              "named_by": null
            },
            "representation": {
              "color": "#99ccff"
            }
          },
          {
            "atomicNumber": 37,
            "symbol": "Rb",
            "name": "Rubidium",
            "protons": 37,
            "neutrons": 48,
            "properties": {
              "yeardiscovered": "1861",
              "atomicmass": "85.468",
              "standardstate": "solid",
              "groupblock": "alkali metal",
              "discovered_by": "Robert Bunsen, Gustav Kirchhoff",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 38,
            "symbol": "Sr",
            "name": "Strontium",
            "protons": 38,
            "neutrons": 50,
            "properties": {
              "yeardiscovered": "1790",
              "atomicmass": "87.62",
              "standardstate": "solid",
              "groupblock": "alkaline earth metal",
              "discovered_by": "Adair Crawford, William Cruickshank",
              "named_by": null
            },
            "representation": {
              "color": "#e6e600"
            }
          },
          {
            "atomicNumber": 39,
            "symbol": "Y",
            "name": "Yttrium",
            "protons": 39,
            "neutrons": 50,
            "properties": {
              "yeardiscovered": "1794",
              "atomicmass": "88.906",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Johan Gadolin",
              "named_by": null
            },
            "representation": {
              "color": "#99ccff"
            }
          },
          {
            "atomicNumber": 40,
            "symbol": "Zr",
            "name": "Zirconium",
            "protons": 40,
            "neutrons": 51,
            "properties": {
              "yeardiscovered": "1789",
              "atomicmass": "91.224",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Martin Heinrich Klaproth",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 41,
            "symbol": "Nb",
            "name": "Niobium",
            "protons": 41,
            "neutrons": 52,
            "properties": {
              "yeardiscovered": "1801",
              "atomicmass": "92.906",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Charles Hatchett",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 42,
            "symbol": "Mo",
            "name": "Molybdenum",
            "protons": 42,
            "neutrons": 54,
            "properties": {
              "yeardiscovered": "1778",
              "atomicmass": "95.95",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Carl Wilhelm Scheele",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 43,
            "symbol": "Tc",
            "name": "Technetium",
            "protons": 43,
            "neutrons": 55,
            "properties": {
              "yeardiscovered": "1937",
              "atomicmass": "(98)",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Carlo Perrier, Emilio Segrè",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 44,
            "symbol": "Ru",
            "name": "Ruthenium",
            "protons": 44,
            "neutrons": 57,
            "properties": {
              "yeardiscovered": "1844",
              "atomicmass": "101.07",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Karl Ernst Claus",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 45,
            "symbol": "Rh",
            "name": "Rhodium",
            "protons": 45,
            "neutrons": 58,
            "properties": {
              "yeardiscovered": "1803",
              "atomicmass": "102.91",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "William Hyde Wollaston",
              "named_by": null
            },
            "representation": {
              "color": "#e68a00"
            }
          },
          {
            "atomicNumber": 46,
            "symbol": "Pd",
            "name": "Palladium",
            "protons": 46,
            "neutrons": 60,
            "properties": {
              "yeardiscovered": "1803",
              "atomicmass": "106.42",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "William Hyde Wollaston",
              "named_by": null
            },
            "representation": {
              "color": "#999999"
            }
          },
          {
            "atomicNumber": 47,
            "symbol": "Ag",
            "name": "Silver",
            "protons": 47,
            "neutrons": 61,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "107.87",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 48,
            "symbol": "Cd",
            "name": "Cadmium",
            "protons": 48,
            "neutrons": 64,
            "properties": {
              "yeardiscovered": "1817",
              "atomicmass": "112.41",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Karl Samuel Leberecht Hermann",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 49,
            "symbol": "In",
            "name": "Indium",
            "protons": 49,
            "neutrons": 66,
            "properties": {
              "yeardiscovered": "1863",
              "atomicmass": "114.82",
              "standardstate": "solid",
              "groupblock": "post-transition metal",
              "discovered_by": "Ferdinand Reich, Hieronymous Theodor Richter",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 50,
            "symbol": "Sn",
            "name": "Tin",
            "protons": 50,
            "neutrons": 69,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "118.71",
              "standardstate": "solid",
              "groupblock": "post-transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 51,
            "symbol": "Sb",
            "name": "Antimony",
            "protons": 51,
            "neutrons": 71,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "121.76",
              "standardstate": "solid",
              "groupblock": "metalloid",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 52,
            "symbol": "Te",
            "name": "Tellurium",
            "protons": 52,
            "neutrons": 76,
            "properties": {
              "yeardiscovered": "1782",
              "atomicmass": "127.60",
              "standardstate": "solid",
              "groupblock": "metalloid",
              "discovered_by": "Franz-Joseph Müller von Reichenstein",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 53,
            "symbol": "I",
            "name": "Iodine",
            "protons": 53,
            "neutrons": 74,
            "properties": {
              "yeardiscovered": "1811",
              "atomicmass": "126.90",
              "standardstate": "solid",
              "groupblock": "halogen",
              "discovered_by": "Bernard Courtois",
              "named_by": null
            },
            "representation": {
              "color": "#e6e600"
            }
          },
          {
            "atomicNumber": 54,
            "symbol": "Xe",
            "name": "Xenon",
            "protons": 54,
            "neutrons": 77,
            "properties": {
              "yeardiscovered": "1898",
              "atomicmass": "131.29",
              "standardstate": "gas",
              "groupblock": "noble gas",
              "discovered_by": "Sir William Ramsay, Morris Travers",
              "named_by": null
            },
            "representation": {
              "color": "#99ccff"
            }
          },
          {
            "atomicNumber": 55,
            "symbol": "Cs",
            "name": "Cesium",
            "protons": 55,
            "neutrons": 78,
            "properties": {
              "yeardiscovered": "1860",
              "atomicmass": "132.91",
              "standardstate": "solid",
              "groupblock": "alkali metal",
              "discovered_by": "Robert Bunsen, Gustav Kirchhoff",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 56,
            "symbol": "Ba",
            "name": "Barium",
            "protons": 56,
            "neutrons": 81,
            "properties": {
              "yeardiscovered": "1808",
              "atomicmass": "137.33",
              "standardstate": "solid",
              "groupblock": "alkaline earth metal",
              "discovered_by": "Sir Humphry Davy",
              "named_by": null
            },
            "representation": {
              "color": "#e6e600"
            }
          },
          {
            "atomicNumber": 57,
            "symbol": "La",
            "name": "Lanthanum",
            "protons": 57,
            "neutrons": 82,
            "properties": {
              "yeardiscovered": "1839",
              "atomicmass": "138.91",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Carl Gustaf Mosander",
              "named_by": null
            },
            "representation": {
              "color": "#99ccff"
            }
          },
          {
            "atomicNumber": 58,
            "symbol": "Ce",
            "name": "Cerium",
            "protons": 58,
            "neutrons": 82,
            "properties": {
              "yeardiscovered": "1803",
              "atomicmass": "140.12",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Jöns Jakob Berzelius, Wilhelm Hisinger, Martin Heinrich Klaproth",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 59,
            "symbol": "Pr",
            "name": "Praseodymium",
            "protons": 59,
            "neutrons": 82,
            "properties": {
              "yeardiscovered": "1885",
              "atomicmass": "140.91",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Carl Auer von Welsbach",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 60,
            "symbol": "Nd",
            "name": "Neodymium",
            "protons": 60,
            "neutrons": 84,
            "properties": {
              "yeardiscovered": "1885",
              "atomicmass": "144.24",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Carl Auer von Welsbach",
              "named_by": null
            },
            "representation": {
              "color": "#e68a00"
            }
          },
          {
            "atomicNumber": 61,
            "symbol": "Pm",
            "name": "Promethium",
            "protons": 61,
            "neutrons": 84,
            "properties": {
              "yeardiscovered": "1945",
              "atomicmass": "(145)",
              "standardstate": "artificial",
              "groupblock": "lanthanide",
              "discovered_by": "Chien-Shiung Wu",
              "named_by": null
            },
            "representation": {
              "color": "#999999"
            }
          },
          {
            "atomicNumber": 62,
            "symbol": "Sm",
            "name": "Samarium",
            "protons": 62,
            "neutrons": 88,
            "properties": {
              "yeardiscovered": "1879",
              "atomicmass": "150.36",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Lecoq de Boisbaudran",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 63,
            "symbol": "Eu",
            "name": "Europium",
            "protons": 63,
            "neutrons": 89,
            "properties": {
              "yeardiscovered": "1901",
              "atomicmass": "151.96",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Eugene-Anatole Demarçay",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 64,
            "symbol": "Gd",
            "name": "Gadolinium",
            "protons": 64,
            "neutrons": 93,
            "properties": {
              "yeardiscovered": "1880",
              "atomicmass": "157.25",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Jean Charles Galissard de Marignac",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 65,
            "symbol": "Tb",
            "name": "Terbium",
            "protons": 65,
            "neutrons": 94,
            "properties": {
              "yeardiscovered": "1843",
              "atomicmass": "158.93",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Carl Gustaf Mosander",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 66,
            "symbol": "Dy",
            "name": "Dysprosium",
            "protons": 66,
            "neutrons": 97,
            "properties": {
              "yeardiscovered": "1886",
              "atomicmass": "162.50",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Paul Émile Lecoq de Boisbaudran",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 67,
            "symbol": "Ho",
            "name": "Holmium",
            "protons": 67,
            "neutrons": 98,
            "properties": {
              "yeardiscovered": "1878",
              "atomicmass": "164.93",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Marc Delafontaine, Jacques-Louis Soret",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 68,
            "symbol": "Er",
            "name": "Erbium",
            "protons": 68,
            "neutrons": 99,
            "properties": {
              "yeardiscovered": "1842",
              "atomicmass": "167.26",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Carl Gustaf Mosander",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 69,
            "symbol": "Tm",
            "name": "Thulium",
            "protons": 69,
            "neutrons": 100,
            "properties": {
              "yeardiscovered": "1879",
              "atomicmass": "168.93",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Per Teodor Cleve",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 70,
            "symbol": "Yb",
            "name": "Ytterbium",
            "protons": 70,
            "neutrons": 103,
            "properties": {
              "yeardiscovered": "1878",
              "atomicmass": "173.04",
              "standardstate": "solid",
              "groupblock": "lanthanide",
              "discovered_by": "Jean Charles Galissard de Marignac",
              "named_by": null
            },
            "representation": {
              "color": "#99ccff"
            }
          },
          {
            "atomicNumber": 71,
            "symbol": "Lu",
            "name": "Lutetium",
            "protons": 71,
            "neutrons": 104,
            "properties": {
              "yeardiscovered": "1907",
              "atomicmass": "174.97",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Carl Auer von Welsbach, Georges Urbain",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 72,
            "symbol": "Hf",
            "name": "Hafnium",
            "protons": 72,
            "neutrons": 106,
            "properties": {
              "yeardiscovered": "1923",
              "atomicmass": "178.49",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Dirk Coster, George de Hevesy",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 73,
            "symbol": "Ta",
            "name": "Tantalum",
            "protons": 73,
            "neutrons": 108,
            "properties": {
              "yeardiscovered": "1802",
              "atomicmass": "180.95",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Anders Gustaf Ekeberg",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 74,
            "symbol": "W",
            "name": "Tungsten",
            "protons": 74,
            "neutrons": 110,
            "properties": {
              "yeardiscovered": "1783",
              "atomicmass": "183.84",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Juan José Elhuyar, Fausto Elhuyar",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 75,
            "symbol": "Re",
            "name": "Rhenium",
            "protons": 75,
            "neutrons": 111,
            "properties": {
              "yeardiscovered": "1925",
              "atomicmass": "186.21",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Walter Noddack, Ida Tacke, Otto Berg",
              "named_by": null
            },
            "representation": {
              "color": "#e68a00"
            }
          },
          {
            "atomicNumber": 76,
            "symbol": "Os",
            "name": "Osmium",
            "protons": 76,
            "neutrons": 116,
            "properties": {
              "yeardiscovered": "1803",
              "atomicmass": "190.23",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Smithson Tennant",
              "named_by": null
            },
            "representation": {
              "color": "#999999"
            }
          },
          {
            "atomicNumber": 77,
            "symbol": "Ir",
            "name": "Iridium",
            "protons": 77,
            "neutrons": 115,
            "properties": {
              "yeardiscovered": "1803",
              "atomicmass": "192.22",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Smithson Tennant",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 78,
            "symbol": "Pt",
            "name": "Platinum",
            "protons": 78,
            "neutrons": 117,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "195.08",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 79,
            "symbol": "Au",
            "name": "Gold",
            "protons": 79,
            "neutrons": 118,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "196.97",
              "standardstate": "solid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 80,
            "symbol": "Hg",
            "name": "Mercury",
            "protons": 80,
            "neutrons": 121,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "200.59",
              "standardstate": "liquid",
              "groupblock": "transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#99ccff"
            }
          },
          {
            "atomicNumber": 81,
            "symbol": "Tl",
            "name": "Thallium",
            "protons": 81,
            "neutrons": 123,
            "properties": {
              "yeardiscovered": "1861",
              "atomicmass": "204.38",
              "standardstate": "solid",
              "groupblock": "post-transition metal",
              "discovered_by": "William Crookes",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 82,
            "symbol": "Pb",
            "name": "Lead",
            "protons": 82,
            "neutrons": 125,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "207.2",
              "standardstate": "solid",
              "groupblock": "post-transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 83,
            "symbol": "Bi",
            "name": "Bismuth",
            "protons": 83,
            "neutrons": 126,
            "properties": {
              "yeardiscovered": "Ancient",
              "atomicmass": "208.98",
              "standardstate": "solid",
              "groupblock": "post-transition metal",
              "discovered_by": "Ancient civilizations",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 84,
            "symbol": "Po",
            "name": "Polonium",
            "protons": 84,
            "neutrons": 125,
            "properties": {
              "yeardiscovered": "1898",
              "atomicmass": "(209)",
              "standardstate": "solid",
              "groupblock": "metalloid",
              "discovered_by": "Marie Curie, Pierre Curie",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 85,
            "symbol": "At",
            "name": "Astatine",
            "protons": 85,
            "neutrons": 125,
            "properties": {
              "yeardiscovered": "1940",
              "atomicmass": "(210)",
              "standardstate": "solid",
              "groupblock": "halogen",
              "discovered_by": "Dale R. Corson, Kenneth Ross MacKenzie, Emilio Segrè",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 86,
            "symbol": "Rn",
            "name": "Radon",
            "protons": 86,
            "neutrons": 136,
            "properties": {
              "yeardiscovered": "1900",
              "atomicmass": "(222)",
              "standardstate": "gas",
              "groupblock": "noble gas",
              "discovered_by": "Friedrich Ernst Dorn",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 87,
            "symbol": "Fr",
            "name": "Francium",
            "protons": 87,
            "neutrons": 136,
            "properties": {
              "yeardiscovered": "1939",
              "atomicmass": "(223)",
              "standardstate": "solid",
              "groupblock": "alkali metal",
              "discovered_by": "Marguerite Perey",
              "named_by": null
            },
            "representation": {
              "color": "#99ccff"
            }
          },
          {
            "atomicNumber": 88,
            "symbol": "Ra",
            "name": "Radium",
            "protons": 88,
            "neutrons": 138,
            "properties": {
              "yeardiscovered": "1898",
              "atomicmass": "(226)",
              "standardstate": "solid",
              "groupblock": "alkaline earth metal",
              "discovered_by": "Marie Curie, Pierre Curie",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 89,
            "symbol": "Ac",
            "name": "Actinium",
            "protons": 89,
            "neutrons": 138,
            "properties": {
              "yeardiscovered": "1899",
              "atomicmass": "(227)",
              "standardstate": "solid",
              "groupblock": "actinide",
              "discovered_by": "Friedrich Oskar Giesel",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 90,
            "symbol": "Th",
            "name": "Thorium",
            "protons": 90,
            "neutrons": 142,
            "properties": {
              "yeardiscovered": "1828",
              "atomicmass": "232.04",
              "standardstate": "solid",
              "groupblock": "actinide",
              "discovered_by": "Jöns Jakob Berzelius",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 91,
            "symbol": "Pa",
            "name": "Protactinium",
            "protons": 91,
            "neutrons": 140,
            "properties": {
              "yeardiscovered": "1913",
              "atomicmass": "231.04",
              "standardstate": "solid",
              "groupblock": "actinide",
              "discovered_by": "Kasimir Fajans, Otto H. Giesel",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 92,
            "symbol": "U",
            "name": "Uranium",
            "protons": 92,
            "neutrons": 146,
            "properties": {
              "yeardiscovered": "1789",
              "atomicmass": "238.03",
              "standardstate": "solid",
              "groupblock": "actinide",
              "discovered_by": "Martin Heinrich Klaproth",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 93,
            "symbol": "Np",
            "name": "Neptunium",
            "protons": 93,
            "neutrons": 144,
            "properties": {
              "yeardiscovered": "1940",
              "atomicmass": "(237)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Edwin McMillan, Philip H. Abelson",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 94,
            "symbol": "Pu",
            "name": "Plutonium",
            "protons": 94,
            "neutrons": 145,
            "properties": {
              "yeardiscovered": "1940",
              "atomicmass": "(244)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Glenn T. Seaborg, Ralph A. James, Albert Ghiorso",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 95,
            "symbol": "Am",
            "name": "Americium",
            "protons": 95,
            "neutrons": 148,
            "properties": {
              "yeardiscovered": "1944",
              "atomicmass": "(243)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 96,
            "symbol": "Cm",
            "name": "Curium",
            "protons": 96,
            "neutrons": 151,
            "properties": {
              "yeardiscovered": "1944",
              "atomicmass": "(247)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Glenn T. Seaborg, Ralph A. James, Albert Ghiorso",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 97,
            "symbol": "Bk",
            "name": "Berkelium",
            "protons": 97,
            "neutrons": 150,
            "properties": {
              "yeardiscovered": "1949",
              "atomicmass": "(247)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Glenn T. Seaborg, Ralph A. James, Albert Ghiorso",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 98,
            "symbol": "Cf",
            "name": "Californium",
            "protons": 98,
            "neutrons": 153,
            "properties": {
              "yeardiscovered": "1950",
              "atomicmass": "(251)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Glenn T. Seaborg, Ralph A. James, Albert Ghiorso",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 99,
            "symbol": "Es",
            "name": "Einsteinium",
            "protons": 99,
            "neutrons": 153,
            "properties": {
              "yeardiscovered": "1952",
              "atomicmass": "(252)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Albert Ghiorso, Glenn T. Seaborg, Ralph A. James",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 100,
            "symbol": "Fm",
            "name": "Fermium",
            "protons": 100,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1952",
              "atomicmass": "(257)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Albert Ghiorso, Glenn T. Seaborg, Ralph A. James",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 101,
            "symbol": "Md",
            "name": "Mendelevium",
            "protons": 101,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1955",
              "atomicmass": "(258)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Albert Ghiorso, Glenn T. Seaborg, Ralph A. James",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 102,
            "symbol": "No",
            "name": "Nobelium",
            "protons": 102,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1958",
              "atomicmass": "(259)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Albert Ghiorso, Glenn T. Seaborg, Ralph A. James",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 103,
            "symbol": "Lr",
            "name": "Lawrencium",
            "protons": 103,
            "neutrons": 159,
            "properties": {
              "yeardiscovered": "1961",
              "atomicmass": "(262)",
              "standardstate": "artificial",
              "groupblock": "actinide",
              "discovered_by": "Albert Ghiorso, Glenn T. Seaborg, Ralph A. James",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 104,
            "symbol": "Rf",
            "name": "Rutherfordium",
            "protons": 104,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1969",
              "atomicmass": "(267)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Lawrence Berkeley National Laboratory (LBNL)",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 105,
            "symbol": "Db",
            "name": "Dubnium",
            "protons": 105,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1967",
              "atomicmass": "(270)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Lawrence Berkeley National Laboratory (LBNL)",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 106,
            "symbol": "Sg",
            "name": "Seaborgium",
            "protons": 106,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1974",
              "atomicmass": "(271)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL)",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 107,
            "symbol": "Bh",
            "name": "Bohrium",
            "protons": 107,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1981",
              "atomicmass": "(270)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Gesellschaft für Schwerionenforschung (GSI) Helmholtz Centre for Heavy Ion Research",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 108,
            "symbol": "Hs",
            "name": "Hassium",
            "protons": 108,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1984",
              "atomicmass": "(277)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Gesellschaft für Schwerionenforschung (GSI) Helmholtz Centre for Heavy Ion Research",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 109,
            "symbol": "Mt",
            "name": "Meitnerium",
            "protons": 109,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1982",
              "atomicmass": "(276)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Gesellschaft für Schwerionenforschung (GSI) Helmholtz Centre for Heavy Ion Research",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 110,
            "symbol": "Ds",
            "name": "Darmstadtium",
            "protons": 110,
            "neutrons": 157,
            "properties": {
              "yeardiscovered": "1994",
              "atomicmass": "(281)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Gesellschaft für Schwerionenforschung (GSI) Helmholtz Centre for Heavy Ion Research",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 111,
            "symbol": "Rg",
            "name": "Roentgenium",
            "protons": 111,
            "neutrons": 161,
            "properties": {
              "yeardiscovered": "1994",
              "atomicmass": "(280)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Gesellschaft für Schwerionenforschung (GSI) Helmholtz Centre for Heavy Ion Research",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 112,
            "symbol": "Cn",
            "name": "Copernicium",
            "protons": 112,
            "neutrons": 161,
            "properties": {
              "yeardiscovered": "1996",
              "atomicmass": "(285)",
              "standardstate": "artificial",
              "groupblock": "transition metal",
              "discovered_by": "Gesellschaft für Schwerionenforschung (GSI) Helmholtz Centre for Heavy Ion Research",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 113,
            "symbol": "Nh",
            "name": "Nihonium",
            "protons": 113,
            "neutrons": 165,
            "properties": {
              "yeardiscovered": "2003",
              "atomicmass": "(286)",
              "standardstate": "artificial",
              "groupblock": "post-transition metal",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL)",
              "named_by": null
            },
            "representation": {
              "color": "#ff6666"
            }
          },
          {
            "atomicNumber": 114,
            "symbol": "Fl",
            "name": "Flerovium",
            "protons": 114,
            "neutrons": 167,
            "properties": {
              "yeardiscovered": "1998",
              "atomicmass": "(289)",
              "standardstate": "artificial",
              "groupblock": "post-transition metal",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL)",
              "named_by": null
            },
            "representation": {
              "color": "#cc6666"
            }
          },
          {
            "atomicNumber": 115,
            "symbol": "Mc",
            "name": "Moscovium",
            "protons": 115,
            "neutrons": 170,
            "properties": {
              "yeardiscovered": "2003",
              "atomicmass": "(290)",
              "standardstate": "artificial",
              "groupblock": "post-transition metal",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL)",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          },
          {
            "atomicNumber": 116,
            "symbol": "Lv",
            "name": "Livermorium",
            "protons": 116,
            "neutrons": 172,
            "properties": {
              "yeardiscovered": "2000",
              "atomicmass": "(293)",
              "standardstate": "artificial",
              "groupblock": "post-transition metal",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL)",
              "named_by": null
            },
            "representation": {
              "color": "#ff9966"
            }
          },
          {
            "atomicNumber": 117,
            "symbol": "Ts",
            "name": "Tennessine",
            "protons": 117,
            "neutrons": 176,
            "properties": {
              "yeardiscovered": "2010",
              "atomicmass": "(294)",
              "standardstate": "artificial",
              "groupblock": "post-transition metal",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Oak Ridge National Laboratory (ORNL)",
              "named_by": null
            },
            "representation": {
              "color": "#b3b3cc"
            }
          },
          {
            "atomicNumber": 118,
            "symbol": "Og",
            "name": "Oganesson",
            "protons": 118,
            "neutrons": 176,
            "properties": {
              "yeardiscovered": "2002",
              "atomicmass": "(294)",
              "standardstate": "artificial",
              "groupblock": "noble gas",
              "discovered_by": "Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL)",
              "named_by": null
            },
            "representation": {
              "color": "#e6e6e6"
            }
          }
    ]
}