69-Tm-178  basic  element

69-thulium-178 Atomic Mass: 177.9526400 +- 0.0004300 amu # Excess Mass: -44116.000 +- 401.000 keV # Binding Energy: 1426829.000 +- 401.000 keV # Beta Decay Energy: B- 5586.000 +- 401.000 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.