Tl
Thallium-181m
Protons (Z)
81
Neutrons (N)
100
Mass number
181
Half-Life
1.4 ms
Abundance
---
Mass
180.987 u
Mass Excess
-11,963.0 keV
Spin
(9/2-)
Discovered
1984
Binding energy per nucleon
7,787 keV
Neutron separation energy
10,644 keV
Proton separation energy
-999 keV
Decay Mode
Decay chain
- TlThallium-181Z 81 · N 1001.4 ms
- γ99.6%
- α8.6%
- β⁺60%
- β⁺94.3%
- β⁺~100%
- β⁺100%
- β⁺100%
- β⁺100%
- β⁺100%