57-La-117  basic  element

57-lanthanum-117 Atomic Mass: 116.9500100 +- 0.0009600 amu # Excess Mass: -46565.000 +- 894.000 keV # Binding Energy: 946316.000 +- 894.000 keV # "The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra, Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.