Samarium-153 (Sm-153)

Identity

Protons

62

Neutrons

91

Mass number

153

Mass

152.9 ± 1.1 u

Mass excess

-72.560 MeV

Spin

3/2+*

Stability

Half-life: 1.93 days

Natural occurrence

Not found in nature

Decays to

• beta minus → Eu-153