Sn
Tin-121m
Protons (Z)
50
Neutrons (N)
71
Mass number
121
Half-Life
43.9 y
Abundance
---
Mass
120.904 u
Mass Excess
-89,190.3 keV
Spin
11/2-
Discovered
1962
Binding energy per nucleon
8,485 keV
Neutron separation energy
6,164 keV
Proton separation energy
10,749 keV
Decay Mode
Decay chain
- SnTin-121Z 50 · N 7143.9 y
- γ77.6%
- β⁻100%