H
Home
Background Color:
He
Li
Be
Neptunium Main Page
Black
White
Gray
B
C
N
O
F
Ne
Na
Mg
Neptunium Pictures Page
Al
Si
P
S
Cl
Ar
K
Ca
Neptunium Technical Data
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Ga
Ge
As
Se
Br
Kr
Rb
Sr
Y
Zr
Nb
Mo
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
Te
I
Xe
Cs
Ba
La
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
Hf
Ta
W
Re
Os
Ir
Pt
Au
Hg
Tl
Pb
Bi
Po
At
Rn
Fr
Ra
Ac
Th
Pa
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
Lr
Rf
Db
Sg
Bh
Hs
Mt
Ds
Rg
Cn
Nh
Fl
Mc
Lv
Ts
Og
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
Np
235
Np
236
Np
237
Np
238
Np
239
Np
240
Np
241
Np
242
Np
243
Np
244
Np
237
Np
Half-life
Boson, 93p 144n
2.144×10
6
y
Spin 5/2 Parity 1
Show Decay Modes
Show Ultimate Decay Products
Atomic Weight
237.048173444
Abundance
None
Mass Excess
44.873275MeV
Binding Energy
7.574982MeV
Magnetic Moment
3.14 μ
Quadrupole Moment
3.886
Show Element Pictures.
Also show decay chains leading to this isotope.
Show all decays, even very low-probability.
Click any isotope in diagram to see its data.
Decay chain image generated by
Mathematica
's
GraphPlot
and
IsotopeData
functions from
Wolfram Research, Inc.
.