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NIST Atomic Spectra Database
Ionization Energies Data

Ar (all spectra)
18 Data Rows Found

Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2014). NIST Atomic Spectra Database (ver. 5.2), [Online]. Available: http://physics.nist.gov/asd [2014, December 21]. National Institute of Standards and Technology, Gaithersburg, MD.
BibTex Citation (new window)
 

 At. Num.   El.  name   Isoel.  Seq.   Ground  Shells a   Ground  Level   Ionization  Energy b 
 (eV) 
 References 
18  Argon  Ar  [Ne]3s23p6   1S0    15.7596112(5)             L9217 
18  Argon  Cl  [Ne]3s23p5   23/2    27.62967(12)              L8844 
18  Argon  [Ne]3s23p4   3P2    [40.735(12)]               L8114 
18  Argon  [Ne]3s23p3   43/2    [59.58(18)]                L11770 
18  Argon  Si  [Ne]3s23p2   3P0    [74.84(17)]                L11770 
18  Argon  Al  [Ne]3s23p   21/2    91.290(10)                L12277 
18  Argon  Mg  [Ne]3s2   1S0    [124.41(6)]                 L11770 
18  Argon  Na  [Ne]3s   2S1/2    [143.457(1)]                L4344 
18  Argon  Ne  1s22s22p6   1S0    [422.60(6)]                 L11770 
18  Argon  1s22s22p5   23/2    [479.76(12)]                L11242c99 
18  Argon  1s22s22p4   3P2    [540.4(6)]                  L11770 
18  Argon  1s22s22p3   43/2    [619.0(4)]                  L11770 
18  Argon  1s22s22p2   3P0    [685.47(30)]                L11770 
18  Argon  1s22s22p   21/2    [755.13(22)]                L11770 
18  Argon  Be  1s22s2   1S0    [855.47(30)]                L11770 
18  Argon  Li  1s22s   2S1/2    (918.374(7))                L16264c99 
18  Argon  He  1s2   1S0    (4 120.6655(4))               L12128 
18  Argon  1s   2S1/2    (4 426.2227(7))               L7188 
Notes:
Designations used in the ground shell lists:
[Ne] = 1s22s22p6
Uncertainty is given in parentheses after the value. It is expressed in the units of the last decimal place of the value.

Query time: 0.1 sec

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