Tl

Thallium-206m

Protons (Z)

81

Neutrons (N)

125

Mass number

206

Half-Life

3.74 m

Abundance

---

Mass

205.979 u

Mass Excess

-19,610.2 keV

Spin

(12-)

Discovered

1976

Binding energy per nucleon

7,859 keV

Neutron separation energy

3,861 keV

Proton separation energy

4,611 keV

Decay Mode

γThallium-206100%

Decay chain

Thallium-206Z 81 · N 1253.74 m
γ100%
β⁻100%