18-Ar-53  basic  element

18-argon-53 Atomic Mass: 53.0062270 +- 0.0010740 amu # Excess Mass: 5800.000 +- 1000.000 keV # Binding Energy: 407897.000 +- 1000.000 keV # Beta Decay Energy: B- 17798.000 +- 1220.000 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.