Pb
Lead-189m
Protons (Z)
82
Neutrons (N)
107
Mass number
189
Half-Life
50.5 s
Abundance
---
Mass
188.981 u
Mass Excess
-17,804.0 keV
Spin
13/2+
Discovered
2009
Binding energy per nucleon
7,826 keV
Neutron separation energy
8,064 keV
Proton separation energy
2,757 keV
Decay Mode
Decay chain
- PbLead-189Z 82 · N 10750.5 s
- β⁺~100%
- β⁺100%
- β⁺100%
- β⁺~100%
- β⁺100%
- EC100%