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LiBeFermium Main PageBlack White GrayBCNOFNe
NaMgFermium Pictures PageAlSiPSClAr
KCaFermium Technical DataScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg

Isotopes of Fermium (click to see decay chain):
242Fm  243Fm  244Fm  245Fm  246Fm  247Fm  248Fm  249Fm  250Fm  251Fm  252Fm  253Fm  254Fm  255Fm  256Fm  257Fm  258Fm  259Fm  260Fm 

255Fm    Half-lifeFermion, 100p 155ntitle icon
20.06944444444 hSpin 7/2 Parity 1

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ProbabilityModeDecay EnergyDaughter
100%α7.23972MeV251Cf
0.000024%SFN/AVariable
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YieldNuclide
100.276313667%207Pb
8.900000000048×10-8%205Tl
8.00001071204×10-10%206Pb
9.900000000049×10-13%208Pb
Atomic Weight255.089962202
AbundanceNone
Mass Excess83.799253MeV
Binding Energy7.43589MeV
Magnetic MomentN/A
Quadrupole MomentN/A
 
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Decay Chain Image

Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..