Tl

Thallium-191m

Protons (Z)

81

Neutrons (N)

110

Mass number

191

Half-Life

5.22 m

Abundance

---

Mass

190.972 u

Mass Excess

-25,986.0 keV

Spin

9/2-

Discovered

1970

Binding energy per nucleon

7,876 keV

Neutron separation energy

9,691 keV

Proton separation energy

1,904 keV

Decay Mode

β⁺Mercury-191100%

Decay chain

Thallium-191Z 81 · N 1105.22 m
β⁺100%
β⁺100%
β⁺100%
EC100%