Th
Thorium-217
Protons (Z)
90
Neutrons (N)
127
Mass number
217
Half-Life
248.0 µs
Abundance
---
Mass
217.013 u
Mass Excess
12,206.0 keV
Spin
(9/2+)
Discovered
1968
Binding energy per nucleon
7,691 keV
Neutron separation energy
6,164 keV
Proton separation energy
3,233 keV
Decay Mode
- α→Radium-213100%
Decay chain
- ThThorium-217Z 90 · N 127248.0 µs
- α100%
- α87%
- β⁺83%
- β⁺96.1%
- α99.546%
- EC100%