Pm

Promethium-145

Protons (Z)

61

Neutrons (N)

84

Mass number

145

Half-Life

17.7 y

Abundance

---

Mass

144.913 u

Mass Excess

-81,267.5 keV

Spin

5/2+

Discovered

1951

Binding energy per nucleon

8,303 keV

Neutron separation energy

7,923 keV

Proton separation energy

4,808 keV

Decay Mode

Decay chain

Promethium-145Z 61 · N 8417.7 y
EC~100%