Tl
Thallium-191
Protons (Z)
81
Neutrons (N)
110
Mass number
191
Half-Life
20.0 m
Abundance
---
Mass
190.972 u
Mass Excess
-26,283.0 keV
Spin
1/2+
Discovered
1974
Binding energy per nucleon
7,877 keV
Neutron separation energy
9,988 keV
Proton separation energy
2,201 keV
Decay Mode
- β⁺→Mercury-191
Decay chain
- TlThallium-191Z 81 · N 11020.0 m
- β⁺
- β⁺100%
- β⁺100%
- EC100%