Tl

Thallium-208

Protons (Z)

81

Neutrons (N)

127

Mass number

208

Half-Life

3.05 m

Abundance

---

Mass

207.982 u

Mass Excess

-16,750.1 keV

Spin

5+

Discovered

1909

Binding energy per nucleon

7,847 keV

Neutron separation energy

3,787 keV

Proton separation energy

7,552 keV

Decay Mode

β⁻Lead-208100%

Decay chain

Thallium-208Z 81 · N 1273.05 m
β⁻100%