Pb
Lead-191m
Protons (Z)
82
Neutrons (N)
109
Mass number
191
Half-Life
2.18 m
Abundance
---
Mass
190.978 u
Mass Excess
-20,234.0 keV
Spin
13/2+
Discovered
1975
Binding energy per nucleon
7,841 keV
Neutron separation energy
7,888 keV
Proton separation energy
3,157 keV
Decay Mode
Decay chain
- PbLead-191Z 82 · N 1092.18 m
- β⁺~100%
- β⁺
- β⁺100%
- β⁺100%
- EC100%