Tl

Thallium-206

Protons (Z)

81

Neutrons (N)

125

Mass number

206

Half-Life

4.2 m

Abundance

---

Mass

205.976 u

Mass Excess

-22,253.3 keV

Spin

0-

Discovered

1935

Binding energy per nucleon

7,872 keV

Neutron separation energy

6,504 keV

Proton separation energy

7,254 keV

Decay Mode

β⁻Lead-206100%

Decay chain

Thallium-206Z 81 · N 1254.2 m
β⁻100%