Tin-121 (Sn-121)

Identity

Protons

50

Neutrons

71

Mass number

121

Mass

120.9 ± 1.1 u

Mass excess

-89.197 MeV

Spin

3/2+*

Stability

Half-life: 1.13 days

Natural occurrence

Not found in nature

Decays to

• beta minus → Sb-121