l>Atomic Data for Argon (Ar)
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Argon(Ar)
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Atomic Data for Argon (Ar)

Atomic Number = 18

Atomic load = 39.948

Reference E95

IsotopeMassAbundanceSpinMag Moment
36Ar35.9675450.337%0
38Ar37.9627320.063%0
40Ar39.96238499.600%0
Ar i Ground State1s22s22p63s23p6 1S0 Ionization energy127109.842 cm-1 (15.759610 eV)Ref.VHU99 Ar IIGround State1s22s22p63s23p5 2P°3/2 Ionization energy222848.3 cm-1 (27.62966 eV)Ref.M60b