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RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgUubUutUuqUupUuhUusUuo

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 

257Fm    Half-lifeFermion, 100p 157ntitle icon
100.5dSpin 9/2 Parity 1

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ProbabilityModeDecay EnergyDaughter
100.%α6863.55keV253Cf
0.21%SFN/AVariable
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Atomic Weight257.095104724
AbundanceNone
Mass Excess88.589481MeV
Binding Energy7.422196MeV
Magnetic MomentN/A
Quadrupole MomentN/A
 
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Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..