Argon-42 (Ar-42)

Identity

Protons

18

Neutrons

24

Mass number

42

Mass

42.0 ± 6.2 u

Mass excess

-34.423 MeV

Spin

0+

Stability

Half-life: 32.9 years

Natural occurrence

Not found in nature

Decays to

• beta minus → K-42 (no page)