Pr

Praseodymium-139

Protons (Z)

59

Neutrons (N)

80

Mass number

139

Half-Life

4.41 h

Abundance

---

Mass

138.909 u

Mass Excess

-84,829.0 keV

Spin

5/2+

Discovered

1951

Binding energy per nucleon

8,350 keV

Neutron separation energy

9,771 keV

Proton separation energy

4,552 keV

Decay Mode

β⁺Cerium-139100%

Decay chain

Praseodymium-139Z 59 · N 804.41 h
β⁺100%
EC100%