HHomeBackground Color:He
LiBeNeptunium Main PageBlack White GrayBCNOFNe
NaMgNeptunium Pictures PageAlSiPSClAr
KCaNeptunium Technical DataScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg

Isotopes of Neptunium (click to see decay chain):
225Np  226Np  227Np  228Np  229Np  230Np  231Np  232Np  233Np  234Np  235Np  236Np  237Np  238Np  239Np  240Np  241Np  242Np  243Np  244Np 

238Np    Half-lifeFermion, 93p 145ntitle icon
2.116898148148 dSpin 2 Parity 1

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ProbabilityModeDecay EnergyDaughter
100%β-1.291527MeV238Pu
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YieldNuclide
100.044158759%206Pb
1.890378×10-6%205Tl
2.600104×10-9%208Pb
7.688000628×10-17%160Dy
5.04402450371×10-21%140Ce
Unknown172Yb
Unknown152Sm
Unknown180Hf
Unknown176Hf
Unknown156Gd
Unknown168Er
Unknown164Dy
Atomic Weight238.050946405
AbundanceNone
Mass Excess47.456272MeV
Binding Energy7.566214MeV
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..