Mercury-203 (Hg-203)

Identity

Protons

80

Neutrons

123

Mass number

203

Mass

203.0 ± 1.8 u

Mass excess

-25.269 MeV

Spin

5/2-*

Stability

Half-life: 46.6 days

Natural occurrence

Not found in nature

Decays to

• beta minus → Tl-203