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

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 

242Np    Half-lifeFermion, 93p 149ntitle icon
2.167mSpin 1 Parity 1

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ProbabilityModeDecay EnergyDaughter
100.%β-2700.keV242Pu
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YieldNuclide
100.04415875923928%206Pb
1.890378000004159×10-6%205Tl
2.6001040000057206×10-9%208Pb
1.69136013816×10-28%160Dy
1.1096853908162155×10-32%140Ce
Unknown172Yb
Unknown176Hf
Unknown152Sm
Unknown180Hf
Unknown156Gd
Unknown168Er
Unknown164Dy
Atomic Weight242.06164118
AbundanceNone
Mass Excess57.41839MeV
Binding Energy7.533397MeV
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..