Tl

Thallium-198

Protons (Z)

81

Neutrons (N)

117

Mass number

198

Half-Life

5.3 h

Abundance

---

Mass

197.97 u

Mass Excess

-27,529.0 keV

Spin

2-

Discovered

1949

Binding energy per nucleon

7,890 keV

Neutron separation energy

7,246 keV

Proton separation energy

4,278 keV

Decay Mode

β⁺Mercury-198100%

Decay chain

Thallium-198Z 81 · N 1175.3 h
β⁺100%