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NIST Atomic Spectra Database
Ionization Energies Data

Co (all spectra)
27 Data Rows Found 
Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2023). NIST Atomic Spectra Database (ver. 5.11), [Online]. Available: https://physics.nist.gov/asd [2024, April 23]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

 At. Num.   El.  name   Isoel.  Seq.   Ground  Shells a   Ground  Level   Ionization  Energy 
 (eV) 		 Uncertainty
 (eV) 		  References 
27  Cobalt  Co  [Ar]3d74s2   4F9/2    7.88101                 0.00012   L10545 
27  Cobalt  Fe  [Ar]3d8   3F4    17.0844                  0.0012    L7185,L2115 
27  Cobalt  Mn  [Ar]3d7   4F9/2    [33.50]                   0.06      L7185,L17500 
27  Cobalt  Cr  [Ar]3d6   5D4    [51.27]                   0.10      L7185,L241 
27  Cobalt  V  [Ar]3d5   6S5/2    [79.50]                   0.20      L7185,L241 
27  Cobalt  Ti  [Ar]3d4   5D0    [102.00]                   0.20      L7185,L241 
27  Cobalt  Sc  [Ar]3d3   4F3/2    [128.9]                    0.5       L7185,L241c99 
27  Cobalt  Ca  [Ar]3d2   3F2    [157.8]                    0.6       L7185 
27  Cobalt  K  [Ar]3d   2D3/2    186.14                    0.25      L7185 
27  Cobalt  Ar  [Ne]3s23p6   1S0    [275.4]                    0.4       L7185 
27  Cobalt  Cl  [Ne]3s23p5   2P°3/2    [305.32]                   0.23      L11770 
27  Cobalt  S  [Ne]3s23p4   3P2    [336.1]                    0.4       L11770 
27  Cobalt  P  [Ne]3s23p3   4S°3/2    [378.5]                    0.7       L11770 
27  Cobalt  Si  [Ne]3s23p2   3P0    [410.0]                    1.0       L11770 
27  Cobalt  Al  [Ne]3s23p   2P°1/2    [441.1]                    1.4       L11770 
27  Cobalt  Mg  [Ne]3s2   1S0    [511.96]                   0.06      L7185 
27  Cobalt  Na  [Ne]3s   2S1/2    [546.588]                  0.015     L11770c98 
27  Cobalt  Ne  1s22s22p6   1S0    1 397.2                     0.5       L7185 
27  Cobalt  F  1s22s22p5   2P°3/2    1 504.5                     1.2       L7185 
27  Cobalt  O  1s22s22p4   3P2    [1 606]                      4         L11770 
27  Cobalt  N  1s22s22p3   4S°3/2    [1 724]                      3         L11770 
27  Cobalt  C  1s22s22p2   3P0    [1 844.0]                    1.1       L11770 
27  Cobalt  B  1s22s22p   2P°1/2    [1 960.8]                    0.8       L11770 
27  Cobalt  Be  1s22s2   1S0    [2 119.4]                    1.9       L11770 
27  Cobalt  Li  1s22s   2S1/2    (2 218.876)                  0.007     L16264c99 
27  Cobalt  He  1s2   1S0    (9 544.1817)                 0.0010    L21139 
27  Cobalt  H  1s   2S1/2    (10 012.1297)                 0.0004    L19200 
Notes:
a Designations used in the ground shell lists:
[Ne] = 1s22s22p6
[Ar] = 1s22s22p63s23p6

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