Pm

Promethium-154

Protons (Z)

61

Neutrons (N)

93

Mass number

154

Half-Life

2.68 m

Abundance

---

Mass

153.927 u

Mass Excess

-68,267.0 keV

Spin

(4+)

Discovered

1958

Binding energy per nucleon

8,205 keV

Neutron separation energy

5,690 keV

Proton separation energy

8,226 keV

Decay Mode

β⁻Samarium-154100%

Decay chain

Promethium-154Z 61 · N 932.68 m
β⁻100%