Tl

Thallium-210

Protons (Z)

81

Neutrons (N)

129

Mass number

210

Half-Life

1.3 m

Abundance

---

Mass

209.99 u

Mass Excess

-9,247.0 keV

Spin

(5+)

Discovered

1909

Binding energy per nucleon

7,814 keV

Neutron separation energy

3,673 keV

Proton separation energy

7,926 keV

Decay Mode

Decay chain

Thallium-210Z 81 · N 1291.3 m
β⁻99.991%
β⁻~100%
β⁻~100%
α100%