Tl
Thallium-188m
Protons (Z)
81
Neutrons (N)
107
Mass number
188
Half-Life
1.19 m
Abundance
---
Mass
187.976 u
Mass Excess
-22,308.0 keV
Spin
7+
Discovered
1970
Binding energy per nucleon
7,853 keV
Neutron separation energy
7,934 keV
Proton separation energy
1,478 keV
Decay Mode
- β⁺→Mercury-188100%
Decay chain
- TlThallium-188Z 81 · N 1071.19 m
- β⁺100%
- β⁺~100%
- β⁺100%
- EC~100%
- β⁺100%