Tin-123 (Sn-123)

Identity

Protons

50

Neutrons

73

Mass number

123

Mass

122.9 ± 2.7 u

Mass excess

-87.815 MeV

Spin

11/2-*

Stability

Half-life: 129 days

Natural occurrence

Not found in nature

Decays to

• beta minus → Sb-123