Rubidium-85 (Rb-85)

Identity

Protons

37

Neutrons

48

Mass number

85

Mass

84.9118 ± 0.0054 u

Mass excess

-82.167 MeV

Spin

5/2-*

Stability

stable

Natural occurrence

72.17 % of rubidium

Produced by

• Kr-85
• Sr-85