Tl
Thallium-180
Protons (Z)
81
Neutrons (N)
99
Mass number
180
Half-Life
1.09 s
Abundance
---
Mass
179.99 u
Mass Excess
-9,390.0 keV
Spin
(4-)
Discovered
1987
Binding energy per nucleon
7,771 keV
Neutron separation energy
9,191 keV
Proton separation energy
-254 keV
Decay Mode
- β⁺SF0.003%
Decay chain
- TlThallium-180Z 81 · N 991.09 s
- β⁺92.997%
- β⁺52%
- β⁺99.42%
- β⁺99.48%
- β⁺100%
- β⁺100%
- β⁺100%
- α100%