{
  "H": {
    "z": 1,
    "name": "Wasserstoff",
    "display": "1,0080",
    "ciaaw_value": "1.0080 ± 0.0002"
  },
  "He": {
    "z": 2,
    "name": "Helium",
    "display": "4,0026",
    "ciaaw_value": "4.0026 ± 0.0001"
  },
  "Li": {
    "z": 3,
    "name": "Lithium",
    "display": "6,94",
    "ciaaw_value": "6.94 ± 0.06"
  },
  "Be": {
    "z": 4,
    "name": "Beryllium",
    "display": "9,0122",
    "ciaaw_value": "9.0122 ± 0.0001"
  },
  "B": {
    "z": 5,
    "name": "Bor",
    "display": "10,81",
    "ciaaw_value": "10.81 ± 0.02"
  },
  "C": {
    "z": 6,
    "name": "Kohlenstoff",
    "display": "12,011",
    "ciaaw_value": "12.011 ± 0.002"
  },
  "N": {
    "z": 7,
    "name": "Stickstoff",
    "display": "14,007",
    "ciaaw_value": "14.007 ± 0.001"
  },
  "O": {
    "z": 8,
    "name": "Sauerstoff",
    "display": "15,999",
    "ciaaw_value": "15.999 ± 0.001"
  },
  "F": {
    "z": 9,
    "name": "Fluor",
    "display": "18,998",
    "ciaaw_value": "18.998 ± 0.001"
  },
  "Ne": {
    "z": 10,
    "name": "Neon",
    "display": "20,180",
    "ciaaw_value": "20.180 ± 0.001"
  },
  "Na": {
    "z": 11,
    "name": "Natrium",
    "display": "22,990",
    "ciaaw_value": "22.990 ± 0.001"
  },
  "Mg": {
    "z": 12,
    "name": "Magnesium",
    "display": "24,305",
    "ciaaw_value": "24.305 ± 0.002"
  },
  "Al": {
    "z": 13,
    "name": "Aluminium",
    "display": "26,982",
    "ciaaw_value": "26.982 ± 0.001"
  },
  "Si": {
    "z": 14,
    "name": "Silicium",
    "display": "28,085",
    "ciaaw_value": "28.085 ± 0.001"
  },
  "P": {
    "z": 15,
    "name": "Phosphor",
    "display": "30,974",
    "ciaaw_value": "30.974 ± 0.001"
  },
  "S": {
    "z": 16,
    "name": "Schwefel",
    "display": "32,06",
    "ciaaw_value": "32.06 ± 0.02"
  },
  "Cl": {
    "z": 17,
    "name": "Chlor",
    "display": "35,45",
    "ciaaw_value": "35.45 ± 0.01"
  },
  "Ar": {
    "z": 18,
    "name": "Argon",
    "display": "39,95",
    "ciaaw_value": "39.95 ± 0.16"
  },
  "K": {
    "z": 19,
    "name": "Kalium",
    "display": "39,098",
    "ciaaw_value": "39.098 ± 0.001"
  },
  "Ca": {
    "z": 20,
    "name": "Calcium",
    "display": "40,078",
    "ciaaw_value": "40.078 ± 0.004"
  },
  "Sc": {
    "z": 21,
    "name": "Scandium",
    "display": "44,956",
    "ciaaw_value": "44.956 ± 0.001"
  },
  "Ti": {
    "z": 22,
    "name": "Titan",
    "display": "47,867",
    "ciaaw_value": "47.867 ± 0.001"
  },
  "V": {
    "z": 23,
    "name": "Vanadium",
    "display": "50,942",
    "ciaaw_value": "50.942 ± 0.001"
  },
  "Cr": {
    "z": 24,
    "name": "Chrom",
    "display": "51,996",
    "ciaaw_value": "51.996 ± 0.001"
  },
  "Mn": {
    "z": 25,
    "name": "Mangan",
    "display": "54,938",
    "ciaaw_value": "54.938 ± 0.001"
  },
  "Fe": {
    "z": 26,
    "name": "Eisen",
    "display": "55,845",
    "ciaaw_value": "55.845 ± 0.002"
  },
  "Co": {
    "z": 27,
    "name": "Cobalt",
    "display": "58,933",
    "ciaaw_value": "58.933 ± 0.001"
  },
  "Ni": {
    "z": 28,
    "name": "Nickel",
    "display": "58,693",
    "ciaaw_value": "58.693 ± 0.001"
  },
  "Cu": {
    "z": 29,
    "name": "Kupfer",
    "display": "63,546",
    "ciaaw_value": "63.546 ± 0.003"
  },
  "Zn": {
    "z": 30,
    "name": "Zink",
    "display": "65,38",
    "ciaaw_value": "65.38 ± 0.02"
  },
  "Ga": {
    "z": 31,
    "name": "Gallium",
    "display": "69,723",
    "ciaaw_value": "69.723 ± 0.001"
  },
  "Ge": {
    "z": 32,
    "name": "Germanium",
    "display": "72,630",
    "ciaaw_value": "72.630 ± 0.008"
  },
  "As": {
    "z": 33,
    "name": "Arsen",
    "display": "74,922",
    "ciaaw_value": "74.922 ± 0.001"
  },
  "Se": {
    "z": 34,
    "name": "Selen",
    "display": "78,971",
    "ciaaw_value": "78.971 ± 0.008"
  },
  "Br": {
    "z": 35,
    "name": "Brom",
    "display": "79,904",
    "ciaaw_value": "79.904 ± 0.003"
  },
  "Kr": {
    "z": 36,
    "name": "Krypton",
    "display": "83,798",
    "ciaaw_value": "83.798 ± 0.002"
  },
  "Rb": {
    "z": 37,
    "name": "Rubidium",
    "display": "85,468",
    "ciaaw_value": "85.468 ± 0.001"
  },
  "Sr": {
    "z": 38,
    "name": "Strontium",
    "display": "87,62",
    "ciaaw_value": "87.62 ± 0.01"
  },
  "Y": {
    "z": 39,
    "name": "Yttrium",
    "display": "88,906",
    "ciaaw_value": "88.906 ± 0.001"
  },
  "Zr": {
    "z": 40,
    "name": "Zirconium",
    "display": "91,222",
    "ciaaw_value": "91.222 ± 0.003"
  },
  "Nb": {
    "z": 41,
    "name": "Niob",
    "display": "92,906",
    "ciaaw_value": "92.906 ± 0.001"
  },
  "Mo": {
    "z": 42,
    "name": "Molybdän",
    "display": "95,95",
    "ciaaw_value": "95.95 ± 0.01"
  },
  "Tc": {
    "z": 43,
    "name": "Technetium",
    "display": "[97]",
    "ciaaw_value": "—"
  },
  "Ru": {
    "z": 44,
    "name": "Ruthenium",
    "display": "101,07",
    "ciaaw_value": "101.07 ± 0.02"
  },
  "Rh": {
    "z": 45,
    "name": "Rhodium",
    "display": "102,91",
    "ciaaw_value": "102.91 ± 0.01"
  },
  "Pd": {
    "z": 46,
    "name": "Palladium",
    "display": "106,42",
    "ciaaw_value": "106.42 ± 0.01"
  },
  "Ag": {
    "z": 47,
    "name": "Silber",
    "display": "107,87",
    "ciaaw_value": "107.87 ± 0.01"
  },
  "Cd": {
    "z": 48,
    "name": "Cadmium",
    "display": "112,41",
    "ciaaw_value": "112.41 ± 0.01"
  },
  "In": {
    "z": 49,
    "name": "Indium",
    "display": "114,82",
    "ciaaw_value": "114.82 ± 0.01"
  },
  "Sn": {
    "z": 50,
    "name": "Zinn",
    "display": "118,71",
    "ciaaw_value": "118.71 ± 0.01"
  },
  "Sb": {
    "z": 51,
    "name": "Antimon",
    "display": "121,76",
    "ciaaw_value": "121.76 ± 0.01"
  },
  "Te": {
    "z": 52,
    "name": "Tellur",
    "display": "127,60",
    "ciaaw_value": "127.60 ± 0.03"
  },
  "I": {
    "z": 53,
    "name": "Iod",
    "display": "126,90",
    "ciaaw_value": "126.90 ± 0.01"
  },
  "Xe": {
    "z": 54,
    "name": "Xenon",
    "display": "131,29",
    "ciaaw_value": "131.29 ± 0.01"
  },
  "Cs": {
    "z": 55,
    "name": "Caesium",
    "display": "132,91",
    "ciaaw_value": "132.91 ± 0.01"
  },
  "Ba": {
    "z": 56,
    "name": "Barium",
    "display": "137,33",
    "ciaaw_value": "137.33 ± 0.01"
  },
  "La": {
    "z": 57,
    "name": "Lanthan",
    "display": "138,91",
    "ciaaw_value": "138.91 ± 0.01"
  },
  "Ce": {
    "z": 58,
    "name": "Cer",
    "display": "140,12",
    "ciaaw_value": "140.12 ± 0.01"
  },
  "Pr": {
    "z": 59,
    "name": "Praseodym",
    "display": "140,91",
    "ciaaw_value": "140.91 ± 0.01"
  },
  "Nd": {
    "z": 60,
    "name": "Neodym",
    "display": "144,24",
    "ciaaw_value": "144.24 ± 0.01"
  },
  "Pm": {
    "z": 61,
    "name": "Promethium",
    "display": "[145]",
    "ciaaw_value": "—"
  },
  "Sm": {
    "z": 62,
    "name": "Samarium",
    "display": "150,36",
    "ciaaw_value": "150.36 ± 0.02"
  },
  "Eu": {
    "z": 63,
    "name": "Europium",
    "display": "151,96",
    "ciaaw_value": "151.96 ± 0.01"
  },
  "Gd": {
    "z": 64,
    "name": "Gadolinium",
    "display": "157,25",
    "ciaaw_value": "157.25 ± 0.01"
  },
  "Tb": {
    "z": 65,
    "name": "Terbium",
    "display": "158,93",
    "ciaaw_value": "158.93 ± 0.01"
  },
  "Dy": {
    "z": 66,
    "name": "Dysprosium",
    "display": "162,50",
    "ciaaw_value": "162.50 ± 0.01"
  },
  "Ho": {
    "z": 67,
    "name": "Holmium",
    "display": "164,93",
    "ciaaw_value": "164.93 ± 0.01"
  },
  "Er": {
    "z": 68,
    "name": "Erbium",
    "display": "167,26",
    "ciaaw_value": "167.26 ± 0.01"
  },
  "Tm": {
    "z": 69,
    "name": "Thulium",
    "display": "168,93",
    "ciaaw_value": "168.93 ± 0.01"
  },
  "Yb": {
    "z": 70,
    "name": "Ytterbium",
    "display": "173,05",
    "ciaaw_value": "173.05 ± 0.02"
  },
  "Lu": {
    "z": 71,
    "name": "Lutetium",
    "display": "174,97",
    "ciaaw_value": "174.97 ± 0.01"
  },
  "Hf": {
    "z": 72,
    "name": "Hafnium",
    "display": "178,49",
    "ciaaw_value": "178.49 ± 0.01"
  },
  "Ta": {
    "z": 73,
    "name": "Tantal",
    "display": "180,95",
    "ciaaw_value": "180.95 ± 0.01"
  },
  "W": {
    "z": 74,
    "name": "Wolfram",
    "display": "183,84",
    "ciaaw_value": "183.84 ± 0.01"
  },
  "Re": {
    "z": 75,
    "name": "Rhenium",
    "display": "186,21",
    "ciaaw_value": "186.21 ± 0.01"
  },
  "Os": {
    "z": 76,
    "name": "Osmium",
    "display": "190,23",
    "ciaaw_value": "190.23 ± 0.03"
  },
  "Ir": {
    "z": 77,
    "name": "Iridium",
    "display": "192,22",
    "ciaaw_value": "192.22 ± 0.01"
  },
  "Pt": {
    "z": 78,
    "name": "Platin",
    "display": "195,08",
    "ciaaw_value": "195.08 ± 0.02"
  },
  "Au": {
    "z": 79,
    "name": "Gold",
    "display": "196,97",
    "ciaaw_value": "196.97 ± 0.01"
  },
  "Hg": {
    "z": 80,
    "name": "Quecksilber",
    "display": "200,59",
    "ciaaw_value": "200.59 ± 0.01"
  },
  "Tl": {
    "z": 81,
    "name": "Thallium",
    "display": "204,38",
    "ciaaw_value": "204.38 ± 0.01"
  },
  "Pb": {
    "z": 82,
    "name": "Blei",
    "display": "207,2",
    "ciaaw_value": "207.2 ± 1.1"
  },
  "Bi": {
    "z": 83,
    "name": "Bismut",
    "display": "208,98",
    "ciaaw_value": "208.98 ± 0.01"
  },
  "Po": {
    "z": 84,
    "name": "Polonium",
    "display": "[209]",
    "ciaaw_value": "—"
  },
  "At": {
    "z": 85,
    "name": "Astat",
    "display": "[210]",
    "ciaaw_value": "—"
  },
  "Rn": {
    "z": 86,
    "name": "Radon",
    "display": "[222]",
    "ciaaw_value": "—"
  },
  "Fr": {
    "z": 87,
    "name": "Francium",
    "display": "[223]",
    "ciaaw_value": "—"
  },
  "Ra": {
    "z": 88,
    "name": "Radium",
    "display": "[226]",
    "ciaaw_value": "—"
  },
  "Ac": {
    "z": 89,
    "name": "Actinium",
    "display": "[227]",
    "ciaaw_value": "—"
  },
  "Th": {
    "z": 90,
    "name": "Thorium",
    "display": "232,04",
    "ciaaw_value": "232.04 ± 0.01"
  },
  "Pa": {
    "z": 91,
    "name": "Protactinium",
    "display": "231,04",
    "ciaaw_value": "231.04 ± 0.01"
  },
  "U": {
    "z": 92,
    "name": "Uran",
    "display": "238,03",
    "ciaaw_value": "238.03 ± 0.01"
  },
  "Np": {
    "z": 93,
    "name": "Neptunium",
    "display": "[237]",
    "ciaaw_value": "—"
  },
  "Pu": {
    "z": 94,
    "name": "Plutonium",
    "display": "[244]",
    "ciaaw_value": "—"
  },
  "Am": {
    "z": 95,
    "name": "Americium",
    "display": "[243]",
    "ciaaw_value": "—"
  },
  "Cm": {
    "z": 96,
    "name": "Curium",
    "display": "[247]",
    "ciaaw_value": "—"
  },
  "Bk": {
    "z": 97,
    "name": "Berkelium",
    "display": "[247]",
    "ciaaw_value": "—"
  },
  "Cf": {
    "z": 98,
    "name": "Californium",
    "display": "[251]",
    "ciaaw_value": "—"
  },
  "Es": {
    "z": 99,
    "name": "Einsteinium",
    "display": "[252]",
    "ciaaw_value": "—"
  },
  "Fm": {
    "z": 100,
    "name": "Fermium",
    "display": "[257]",
    "ciaaw_value": "—"
  },
  "Md": {
    "z": 101,
    "name": "Mendelevium",
    "display": "[258]",
    "ciaaw_value": "—"
  },
  "No": {
    "z": 102,
    "name": "Nobelium",
    "display": "[259]",
    "ciaaw_value": "—"
  },
  "Lr": {
    "z": 103,
    "name": "Lawrencium",
    "display": "[262]",
    "ciaaw_value": "—"
  },
  "Rf": {
    "z": 104,
    "name": "Rutherfordium",
    "display": "[267]",
    "ciaaw_value": "—"
  },
  "Db": {
    "z": 105,
    "name": "Dubnium",
    "display": "[268]",
    "ciaaw_value": "—"
  },
  "Sg": {
    "z": 106,
    "name": "Seaborgium",
    "display": "[269]",
    "ciaaw_value": "—"
  },
  "Bh": {
    "z": 107,
    "name": "Bohrium",
    "display": "[270]",
    "ciaaw_value": "—"
  },
  "Hs": {
    "z": 108,
    "name": "Hassium",
    "display": "[269]",
    "ciaaw_value": "—"
  },
  "Mt": {
    "z": 109,
    "name": "Meitnerium",
    "display": "[277]",
    "ciaaw_value": "—"
  },
  "Ds": {
    "z": 110,
    "name": "Darmstadtium",
    "display": "[281]",
    "ciaaw_value": "—"
  },
  "Rg": {
    "z": 111,
    "name": "Roentgenium",
    "display": "[282]",
    "ciaaw_value": "—"
  },
  "Cn": {
    "z": 112,
    "name": "Copernicium",
    "display": "[285]",
    "ciaaw_value": "—"
  },
  "Nh": {
    "z": 113,
    "name": "Nihonium",
    "display": "[286]",
    "ciaaw_value": "—"
  },
  "Fl": {
    "z": 114,
    "name": "Flerovium",
    "display": "[290]",
    "ciaaw_value": "—"
  },
  "Mc": {
    "z": 115,
    "name": "Moscovium",
    "display": "[290]",
    "ciaaw_value": "—"
  },
  "Lv": {
    "z": 116,
    "name": "Livermorium",
    "display": "[293]",
    "ciaaw_value": "—"
  },
  "Ts": {
    "z": 117,
    "name": "Tenness",
    "display": "[294]",
    "ciaaw_value": "—"
  },
  "Og": {
    "z": 118,
    "name": "Oganesson",
    "display": "[294]",
    "ciaaw_value": "—"
  }
}