Th
Thorium-231
Protons (Z)
90
Neutrons (N)
141
Mass number
231
Half-Life
1.06 d
Abundance
---
Mass
231.036 u
Mass Excess
33,815.8 keV
Spin
5/2+
Discovered
1911
Binding energy per nucleon
7,620 keV
Neutron separation energy
5,118 keV
Proton separation energy
7,311 keV
Decay Mode
- β⁻→Protactinium-231100%
Decay chain
- ThThorium-231Z 90 · N 1411.06 d
- β⁻100%
- α~100%
- β⁻98.62%
- α100%
- α~100%
- α100%
- α~100%
- β⁻100%
- α~100%
- β⁻100%