Protactinium-230 (Pa-230)

Identity

Protons

91

Neutrons

139

Mass number

230

Mass

230.0 ± 3.3 u

Mass excess

32.174 MeV

Spin

2-

Stability

Half-life: 17.4 days

Natural occurrence

Not found in nature

Decays to

• positron emission 92.2 % → Th-230
• beta minus 7.8 % → U-230
• alpha 0.0032 % → Ac-226