Pm
Promethium-136n
Protons (Z)
61
Neutrons (N)
75
Mass number
136
Half-Life
1.5 µs
Abundance
---
Mass
135.924 u
Mass Excess
-71,130.0 keV
Spin
(7-)
Discovered
1987
Binding energy per nucleon
8,243 keV
Neutron separation energy
9,141 keV
Proton separation energy
2,205 keV
Decay Mode
- γ→Promethium-136100%
Decay chain
- PmPromethium-136Z 61 · N 751.5 µs
- γ100%
- β⁺100%
- β⁺100%
- β⁺100%