Ce
Cerium-121
Protons (Z)
58
Neutrons (N)
63
Mass number
121
Half-Life
1.1 s
Abundance
---
Mass
120.943 u
Mass Excess
-52,690.0 keV
Spin
(5/2+)
Discovered
1997
Binding energy per nucleon
8,132 keV
Neutron separation energy
11,031 keV
Proton separation energy
2,409 keV
Decay Mode
Decay chain
- CeCerium-121Z 58 · N 631.1 s
- β⁺99%
- β⁺100%
- β⁺99.98%
- β⁺100%
- β⁺100%
- β⁺100%
- β⁺100%