Uranium-237 (U-237)

Identity

Protons

92

Neutrons

145

Mass number

237

Mass

237.0 ± 1.3 u

Mass excess

45.390 MeV

Spin

1/2+

Stability

Half-life: 6.75 days

Natural occurrence

Not found in nature

Decays to

• beta minus → Np-237

Produced by

• Pu-241