Xe
Xenon-129m
Protons (Z)
54
Neutrons (N)
75
Mass number
129
Half-Life
8.88 d
Abundance
---
Mass
128.905 u
Mass Excess
-88,459.93 keV
Spin
11/2-
Discovered
1951
Binding energy per nucleon
8,430 keV
Neutron separation energy
6,671 keV
Proton separation energy
8,011 keV
Decay Mode
- γ→Xenon-129100%
Decay chain
- XeXenon-129Z 54 · N 758.88 d
- γ100%