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Isotopes of Neptunium (click to see decay chain):
225
Np
226
Np
227
Np
228
Np
229
Np
230
Np
231
Np
232
Np
233
Np
234
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235
Np
236
Np
237
Np
238
Np
239
Np
240
Np
241
Np
242
Np
243
Np
244
Np
226
Np
Half-life
Fermion, 93p 133n
35 ms
Spin ? Parity ?
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Probability
Mode
Decay Energy
Daughter
100%
α
8.1973MeV
222
Pa
0.003%
β
+
4.3868MeV
226
U
Hide Ultimate Decay Products
Yield
Nuclide
100.178%
206
Pb
1.17×10
-24
%
208
Pb
Atomic Weight
226.035145
Abundance
None
Mass Excess
32.738MeV
Binding Energy
7.605MeV
Magnetic Moment
N/A
Quadrupole Moment
N/A
Show Element Pictures.
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Show only decays with probability >0.1%.
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Click any isotope in diagram to see its data.
Decay chain image generated by
Mathematica
's
GraphPlot
and
IsotopeData
functions from
Wolfram Research, Inc.
.