Po
Polonium-199m
Protons (Z)
84
Neutrons (N)
115
Mass number
199
Half-Life
4.17 m
Abundance
---
Mass
198.984 u
Mass Excess
-14,927.0 keV
Spin
13/2+
Discovered
1964
Binding energy per nucleon
7,816 keV
Neutron separation energy
7,525 keV
Proton separation energy
2,842 keV
Decay Mode
Decay chain
- PoPolonium-199Z 84 · N 1154.17 m
- β⁺73.5%
- β⁺100%
- β⁺100%
- β⁺100%