element
Information about Dubnium-256:

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    Mass-Energy Data:

    Atomic Mass:256.108110±0.000385amu #
    Excess Mass (Δ):100.704000±0.359000MeV #
    Binding Energy:1883.407000±0.359000MeV #
"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.
Radioactive Decay Data:

  • Half life: 2.6 s ( 2.6 sec., λ = 0.266595 s-1)
  • Mode of decay: α to
    252
    103
    Lr
      (Q = 9.500 MeV)   Branch ratio: <=90.00 %
  • Mode of decay: SF   Branch ratio: <=40.00 %
  • Mode of decay: E.C. to
    256
    104
    Rf
      Branch ratio: ~10.00 %
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)