Pr

Praseodymium-140m

Protons (Z)

59

Neutrons (N)

81

Mass number

140

Half-Life

350.0 ns

Abundance

---

Mass

139.909 u

Mass Excess

-84,558.0 keV

Spin

5+

Discovered

1964

Binding energy per nucleon

8,346 keV

Neutron separation energy

7,800 keV

Proton separation energy

4,889 keV

Decay Mode

γPraseodymium-140100%

Decay chain

Praseodymium-140Z 59 · N 81350.0 ns
γ100%
β⁺100%