Pm

Promethium-153

Protons (Z)

61

Neutrons (N)

92

Mass number

153

Half-Life

5.25 m

Abundance

---

Mass

152.924 u

Mass Excess

-70,648.0 keV

Spin

5/2-

Discovered

1962

Binding energy per nucleon

8,221 keV

Neutron separation energy

7,465 keV

Proton separation energy

7,787 keV

Decay Mode

β⁻Samarium-153100%

Decay chain

Promethium-153Z 61 · N 925.25 m
β⁻100%
β⁻100%