Ruthenium-103 (Ru-103)

Identity

Protons

44

Neutrons

59

Mass number

103

Mass

102.91 ± 0.47 u

Mass excess

-87.267 MeV

Spin

3/2+

Stability

Half-life: 39.2 days

Natural occurrence

Not found in nature

Decays to

• beta minus → Rh-103