Isotopes of Argon

Notable Isotopes

36Ar [18 neutrons]

Abundance: 0.337%

Stable with 18 neutrons

37Ar [19 neutrons]

Abundance: synthetic

Half life: 35 days [ Electron Capture ]

Decay Energy: unknown MeV

Decays to 37Cl.

38Ar [20 neutrons]

Abundance: 0.063%

Stable with 20 neutrons

39Ar [21 neutrons]

Abundance: synthetic

Half life: 269 years [ beta- ]

Decay Energy: 0.565 MeV

Decays to 39K.

42K [24 neutrons]

Abundance: synthetic

Half life: 32.9 years [ beta- ]

Decay Energy: 0.600 MeV

Decays to 42K.