Pm

Promethium-136

Protons (Z)

61

Neutrons (N)

75

Mass number

136

Half-Life

1.78 m

Abundance

---

Mass

135.924 u

Mass Excess

-71,170.0 keV

Spin

(7+)

Discovered

1988

Binding energy per nucleon

8,244 keV

Neutron separation energy

9,181 keV

Proton separation energy

2,245 keV

Decay Mode

β⁺Neodymium-136100%

Decay chain

Promethium-136Z 61 · N 751.78 m
β⁺100%
β⁺100%
β⁺100%