element
Information about Radon-208:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:207.989631±0.000014amu
    Excess Mass (Δ):-9.658440±0.013500MeV
    Binding Energy:1621.211191±0.013503MeV
    β- Decay Energy:-6.988638±0.079335MeV
"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:

  • Spin: 0+
  • Half life: 24.35 min ( 1461 sec., λ = 0.000474433 s-1)
  • Mode of decay:
    α
    to
    204
    84
    Po
      (Q = 6.260 MeV)   Branch ratio: 62.00 %
  • Mode of decay:
    E.C.
    to
    208
    85
    At
      (Q = 2.850 MeV)   Branch ratio: 38.00 %

  • Possible parent nuclides:
    E.C. from
    208
    87
    Fr
    α from
    212
    88
    Ra
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)
Magnetic Dipole Moments and Electric Quadrupole Moments
Ex(kev)T1/2Spin    m(nm)    Q(b)    Ref. Std.MethodReference
1826490 ns8+ 6.98(8) TDPADHFI 9 87 (81)
0.39(5) [212Rn 1694]TDPADPL 182B 11 (86)
261522 ns10- 10.77(10) TDPADHFI 9 87 (81)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.