Calcium-47 (Ca-47)

Identity

Protons

20

Neutrons

27

Mass number

47

Mass

47.0 ± 2.4 u

Mass excess

-42.345 MeV

Spin

7/2-*

Stability

Half-life: 4.54 days

Natural occurrence

Not found in nature

Decays to

• beta minus → Sc-47