Pr
Praseodymium-140
Protons (Z)
59
Neutrons (N)
81
Mass number
140
Half-Life
3.39 m
Abundance
---
Mass
139.909 u
Mass Excess
-84,686.0 keV
Spin
1+
Discovered
1938
Binding energy per nucleon
8,347 keV
Neutron separation energy
7,928 keV
Proton separation energy
5,017 keV
Decay Mode
- β⁺48.7%
Decay chain
- PrPraseodymium-140Z 59 · N 813.39 m
- β⁺100%