Po
Polonium-203m
Protons (Z)
84
Neutrons (N)
119
Mass number
203
Half-Life
45.0 s
Abundance
---
Mass
202.982 u
Mass Excess
-16,669.0 keV
Spin
13/2+
Discovered
1969
Binding energy per nucleon
7,830 keV
Neutron separation energy
6,798 keV
Proton separation energy
3,207 keV
Decay Mode
Decay chain
- PoPolonium-203Z 84 · N 11945.0 s
- γ100%
- β⁺99.89%
- β⁺100%
- EC100%