Krypton-85 (Kr-85)

Identity

Protons

36

Neutrons

49

Mass number

85

Mass

84.9 ± 2.1 u

Mass excess

-81.480 MeV

Spin

9/2+*

Stability

Half-life: 10.7 years

Natural occurrence

Not found in nature

Decays to

• beta minus → Rb-85