85-At-205  basic  element

85-astatine-205 Atomic Mass: 204.9860364 +- 0.0000337 amu Excess Mass: -13007.052 +- 31.402 keV Binding Energy: 1601128.189 +- 31.403 keV Beta Decay Energy: B- -5246.000 +- 118.000 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. Spin: 9/2- Half life: 26.2 min Mode of decay: Electron capture to Po-205 Branch ratio: 90.00 % Decay energy: 4.540 MeV Mode of decay: Alpha to Bi-201 Branch ratio: 10.00 % Decay energy: 6.020 MeV Possible parent nuclides: Electron capture from Rn-205 Alpha from Fr-209 R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)