Tl

Thallium-189m

Protons (Z)

81

Neutrons (N)

108

Mass number

189

Half-Life

1.4 m

Abundance

---

Mass

188.974 u

Mass Excess

-24,331.0 keV

Spin

9/2-

Discovered

1972

Binding energy per nucleon

7,865 keV

Neutron separation energy

10,066 keV

Proton separation energy

1,422 keV

Decay Mode

Decay chain

Thallium-189Z 81 · N 1081.4 m
β⁺100%
β⁺100%
β⁺~100%
β⁺100%
EC100%