Pb
Lead-187m
Protons (Z)
82
Neutrons (N)
105
Mass number
187
Half-Life
18.3 s
Abundance
---
Mass
186.984 u
Mass Excess
-14,968.0 keV
Spin
13/2+
Discovered
1972
Binding energy per nucleon
7,808 keV
Neutron separation energy
8,358 keV
Proton separation energy
2,374 keV
Decay Mode
Decay chain
- PbLead-187Z 82 · N 10518.3 s
- β⁺88%
- β⁺100%
- β⁺100%
- β⁺100%
- β⁺100%
- β⁺100%