Nickel-57 (Ni-57)

Identity

Protons

28

Neutrons

29

Mass number

57

Mass

56.94 ± 0.61 u

Mass excess

-56.084 MeV

Spin

3/2-

Stability

Half-life: 1.48 days

Natural occurrence

Not found in nature

Decays to

• positron emission → Co-57