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NIST Atomic Spectra Database
Ionization Energies Data

K (all spectra)
19 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, October 1]. 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 
19  Potassium  [Ar]4s   2S1/2    4.34066354(9)             L5451,L5783,L7185 
19  Potassium  Ar  [Ne]3s23p6   1S0    31.62500(19)               L12188 
19  Potassium  Cl  [Ne]3s23p5   23/2    [45.8031(17)]               L11770 
19  Potassium  [Ne]3s23p4   3P2    [60.917(19)]                L11770 
19  Potassium  [Ne]3s23p3   43/2    [82.66(16)]                 L241 
19  Potassium  Si  [Ne]3s23p2   3P0    [99.44(20)]                 L7185 
19  Potassium  Al  [Ne]3s23p   21/2    117.56(11)                  L7185 
19  Potassium  Mg  [Ne]3s2   1S0    [154.87(5)]                  L12392 
19  Potassium  Na  [Ne]3s   2S1/2    [175.8174(25)]               L4344 
19  Potassium  Ne  1s22s22p6   1S0    [503.67(7)]                  L11770 
19  Potassium  1s22s22p5   23/2    [565.62(70)]                 L11770 
19  Potassium  1s22s22p4   3P2    [631.1(9)]                   L11770 
19  Potassium  1s22s22p3   43/2    [714.7(5)]                   L11770 
19  Potassium  1s22s22p2   3P0    [786.26(30)]                 L11770 
19  Potassium  1s22s22p   21/2    [860.92(25)]                 L11770 
19  Potassium  Be  1s22s2   1S0    [967.7(3)]                   L11770 
19  Potassium  Li  1s22s   2S1/2    (1 034.541(7))                 L16264c99 
19  Potassium  He  1s2   1S0    (4 610.86998(12))              L8473 
19  Potassium  1s   2S1/2    (4 934.0482(9))                L7188 
Notes:
Designations used in the ground shell lists:
[Ne] = 1s22s22p6
[Ar] = 1s22s22p63s23p6
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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