Pm

Promethium-146

Protons (Z)

61

Neutrons (N)

85

Mass number

146

Half-Life

5.53 y

Abundance

---

Mass

145.915 u

Mass Excess

-79,454.0 keV

Spin

3-

Discovered

1960

Binding energy per nucleon

8,289 keV

Neutron separation energy

6,258 keV

Proton separation energy

5,311 keV

Decay Mode

Decay chain

Promethium-146Z 61 · N 855.53 y
EC66%