In
Indium-129m
Protons (Z)
49
Neutrons (N)
80
Mass number
129
Half-Life
1.23 s
Abundance
---
Mass
128.922 u
Mass Excess
-72,384.2 keV
Spin
1/2-
Discovered
1976
Binding energy per nucleon
8,335 keV
Neutron separation energy
6,265 keV
Proton separation energy
12,435 keV
Decay Mode
Decay chain
- InIndium-129Z 49 · N 801.23 s
- β⁻96.4%
- β⁻100%
- β⁻100%
- β⁻100%
- β⁻100%