101-Md-258
 basic

 element
101-mendelevium-258

  • Atomic Mass: 258.0984253 +- 0.0000051 amu
  • Excess Mass: 91682.582 +- 4.765 keV
  • Binding Energy: 1911701.009 +- 4.778 keV
  • Beta Decay Energy: B- 209.000 +- 200.000 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: (1-)
  • Half life: 60 min
  • Mode of decay: Electron capture to Fm-258
    • Branch ratio: ~100.00 %
    • Decay energy: 1.260 MeV

    Meta state at 0.000 Mev
  • Spin: (8-)
  • Half life: 51.5 d
  • Mode of decay: Alpha to Es-254
    • Decay energy: 7.271 MeV
  • Mode of decay: SF
    • Branch ratio: <=0.003 %
    • Decay energy: 3 7.271 MeV
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)