Neptunium-234 (Np-234)

Identity

Protons

93

Neutrons

141

Mass number

234

Mass

234.0 ± 9.0 u

Mass excess

39.955 MeV

Spin

(0+)

Stability

Half-life: 4.4 days

Natural occurrence

Not found in nature

Decays to

• positron emission → U-234