Ce

Cerium-137m

Protons (Z)

58

Neutrons (N)

79

Mass number

137

Half-Life

1.43 d

Abundance

---

Mass

136.908 u

Mass Excess

-85,664.5 keV

Spin

11/2-

Discovered

1958

Binding energy per nucleon

8,365 keV

Neutron separation energy

7,227 keV

Proton separation energy

6,913 keV

Decay Mode

Decay chain

Cerium-137Z 58 · N 791.43 d
γ99.21%
β⁺100%
EC100%