I
Iodine-139
Protons (Z)
53
Neutrons (N)
86
Mass number
139
Half-Life
2.28 s
Abundance
---
Mass
138.926 u
Mass Excess
-68,471.0 keV
Spin
(7/2+)
Discovered
1949
Binding energy per nucleon
8,266 keV
Neutron separation energy
4,562 keV
Proton separation energy
10,064 keV
Decay Mode
Decay chain
- IIodine-139Z 53 · N 862.28 s
- β⁻90.26%
- β⁻100%
- β⁻100%
- β⁻100%