Tl

Thallium-204n

Protons (Z)

81

Neutrons (N)

123

Mass number

204

Half-Life

2.6 µs

Abundance

---

Mass

203.976 u

Mass Excess

-22,027.1 keV

Spin

12-

Discovered

1998

Binding energy per nucleon

7,869 keV

Neutron separation energy

4,337 keV

Proton separation energy

4,047 keV

Decay Mode

γThallium-204100%

Decay chain

Thallium-204Z 81 · N 1232.6 µs
γ100%
β⁻97.08%