Thallium-205 (Tl-205)

Identity

Protons

81

Neutrons

124

Mass number

205

Mass

205.0 ± 1.3 u

Mass excess

-23.821 MeV

Spin

1/2+*

Stability

stable

Natural occurrence

70.48 % of thallium

Produced by

• Pb-205
• Bi-209