atomMasses.json~

elements = {
    H: 1.008,
    He: 4.003,
    Li: : 6.939,
    Be: 9.012,
    B: 10.811,
    C:12.011,
    N: 14.007,
    O: 15.999,
    F: 18.998,
    Ne: 20.183,
    Na: 22.990,
    Mg: 24.312,
    Al:26.982,
    Si: 28.086,
    P: 30.974,
    S: 32.064,
    Cl: 35.453,
    Ar: 39.948,
    K: 39.102,
    Ca: 40.08,
    Sc: 44.956,
    Ti: 47.90,
    V: 50.94,
    Cr: 52.00,
    Mn: 54.94,
    Fe: 55.85,
    Co: 58.93,
    Ni: 58.71,
    Cu: 63.54,
    Zn: 65.37,
    Ga: 69.72,
    Ge: 72.59,
    As: 74.92,
    Se: 78.96,
    Br: 79.909,
    Kr: 83.80,
    Rb: 85.47,
    Sr: 87.62,
    Y: 88.905,
    Zr: 91.22,
    Nb: 92.906,
    Mo: 95.94,
    Tc: 99.00,
    Ru: 101.07,
    Rh: 102.92,
    Pd: 106.4,
    Ag: 107.87,
    Cd: 112.40,
    In: 114.82,
    Sn: 118.69,
    Sb: 121.75,
    Te: 127.60,
    I: 126.904,
    Xe: 131.30,
    Cs: 132.905,
    Ba: 137.34,
    La: 138.91,
    Ce: 140.12,
    Pr: 140.907,
    Nd: 144.24,
    Pm: 147,
    Sm: 150.35,
    Eu: 151.96,
    Gd: 157.25,
    Tb: 158.92,
    Dy: 162.50,
    Ho: 164.93,
    Er: 167.26,
    Tm: 168.93,
    Yb: 173.04,
    Lu: 174.97,
    Hf: 178.49,
    Ta: 180.95,
    W: 183.85,
    Re: 186.21,
    Os: 190.23,
    Ir: 192.22,
    Pt: 195.09,
    Au: 196.97,
    Hg: 200.59,
    Tl: 204.37,
    Pb: 207.19,
    Bi: 208.98,
    Po: 209,
    At: 210,
    Rn: 222,
    Fr: 223,
    Ra: 226.05,
    Ac: 227.05,
    Th: 232.12,
    Pa: 231.05,
    U: 238.07,
    Np: 237,
    Pu: 239,
    Am: 241,
    Cm: 242,
    Bk: 243,
    Cf: 251,
    Es: 246,
    Fm: 250,
    Md: 256,
    No: 254,
    Lr: 257,
    Rf: 267,
    Db: 268,
    Sg: 271
};