Isotopes of Promethium
Notes
Promethium has no stable isotopes.
Notable Isotopes
145
Pm
[84 neutrons]
Abundance:
synthetic
Half life:
17.7 years [
Electron Capture
]
Decay Energy:
0.163
MeV
Decays to
145
Nd
.
146
Pm
[85 neutrons]
Abundance:
synthetic
Half life:
5.53 years [
Electron Capture
]
Decay Energy:
1.472
MeV
Decays to
146
Nd
.
Half life:
5.53 years [
beta
-
]
Decay Energy:
1.542
MeV
Decays to
146
Sm
.
147
Pm
[86 neutrons]
Abundance:
synthetic
Half life:
2.6234 years [
beta
-
]
Decay Energy:
0.224
MeV
Decays to
147
Sm
.