Pm

Promethium-141m

Protons (Z)

61

Neutrons (N)

80

Mass number

141

Half-Life

630.0 ns

Abundance

---

Mass

140.914 u

Mass Excess

-79,894.0 keV

Spin

11/2-

Discovered

1970

Binding energy per nucleon

8,299 keV

Neutron separation energy

9,753 keV

Proton separation energy

2,926 keV

Decay Mode

γPromethium-141100%

Decay chain

Promethium-141Z 61 · N 80630.0 ns
γ100%
β⁺100%
β⁺100%