Tl
Thallium-181
Protons (Z)
81
Neutrons (N)
100
Mass number
181
Half-Life
2.9 s
Abundance
---
Mass
180.986 u
Mass Excess
-12,799.0 keV
Spin
1/2+
Discovered
1996
Binding energy per nucleon
7,792 keV
Neutron separation energy
11,480 keV
Proton separation energy
-163 keV
Decay Mode
Decay chain
- TlThallium-181Z 81 · N 1002.9 s
- α8.6%
- β⁺60%
- β⁺94.3%
- β⁺~100%
- β⁺100%
- β⁺100%
- β⁺100%
- β⁺100%