Chemical atomic weight json

atomic_weight.json

{
  "H":   1.008,
  "He":  4.00260,
  "Li":  6.94,
  "Be":  9.012182,
  "B":   10.81,
  "C":   12.011,
  "N":   14.007,
  "O":   15.999,
  "F":   18.9984032,
  "Ne":  20.1797,
  "Na":  22.98976928,
  "Mg":  24.305,
  "Al":  26.9815386,
  "Si":  28.085,
  "P":   30.973762,
  "S":   32.06,
  "Cl":  35.45,
  "Ar":  39.948,
  "K":   39.0983,
  "Ca":  40.078,
  "Sc":  44.955912,
  "Ti":  47.867,
  "V":   50.9415,
  "Cr":  51.9961,
  "Mn":  54.938045,
  "Fe":  55.845,
  "Co":  58.933195,
  "Ni":  58.6934,
  "Cu":  63.546,
  "Zn":  65.38,
  "Ga":  69.723,
  "Ge":  72.630,
  "As":  74.92160,
  "Se":  78.96,
  "Br":  79.9049,
  "Kr":  83.798,
  "Rb":  85.4678,
  "Sr":  87.62,
  "Y":   88.90585,
  "Zr":  91.224,
  "Nb":  92.90638,
  "Mo":  95.96,
  "Tc":  98,
  "Ru":  101.07,
  "Rh":  102.90550,
  "Pd":  106.42,
  "Ag":  107.8682,
  "Cd":  112.411,
  "In":  114.818,
  "Sn":  118.710,
  "Sb":  121.760,
  "Te":  127.60,
  "I":   126.90447,
  "Xe":  131.293,
  "Cs":  132.9054519,
  "Ba":  137.327,
  "La":  138.90547,
  "Ce":  140.116,
  "Pr":  140.90765,
  "Nd":  144.242,
  "Pm":  145,
  "Sm":  150.36,
  "Eu":  151.964,
  "Gd":  157.25,
  "Tb":  158.92535,
  "Dy":  162.500,
  "Ho":  164.93032,
  "Er":  167.259,
  "Tm":  168.93421,
  "Yb":  173.054,
  "Lu":  174.9668,
  "Hf":  178.49,
  "Ta":  180.94788,
  "W":   183.84,
  "Re":  186.207,
  "Os":  190.23,
  "Ir":  192.217,
  "Pt":  195.084,
  "Au":  196.966569,
  "Hg":  200.592,
  "Tl":  204.38,
  "Pb":  207.2,
  "Bi":  208.9804,
  "Po":  209,
  "At":  210,
  "Rn":  222,
  "Fr":  223,
  "Ra":  226,
  "Ac":  227,
  "Th":  232.03806,
  "Pa":  231.03588,
  "U":   238.02891,
  "Np":  237,
  "Pu":  244,
  "Am":  243,
  "Cm":  247,
  "Bk":  247,
  "Cf":  251,
  "Es":  252,
  "Fm":  257,
  "Md":  258,
  "No":  259,
  "Lr":  266,
  "Rf":  267,
  "Db":  268,
  "Sg":  269,
  "Bh":  270,
  "Hs":  269,
  "Mt":  278,
  "Ds":  281,
  "Rg":  281,
  "Cn":  285,
  "Uut": 286,
  "Fl":  289,
  "Uup": 289,
  "Lv":  293,
  "Uus": 294,
  "Uuo": 294
}