Samarium-149 (Sm-149)

Identity

Protons

62

Neutrons

87

Mass number

149

Mass

148.9 ± 1.2 u

Mass excess

-77.136 MeV

Spin

7/2-*

Stability

stable

Natural occurrence

13.82 % of samarium

Produced by

• Pm-149
• Eu-149