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NIST Atomic Spectra Database
Ionization Energies Data

O (all spectra)
8 Data Rows Found 

Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, July 22]. 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   Ionization  Energy 
 (eV) 
Uncertainty
 (eV) 
 References 
Oxygen  1s22s22p4    13.618055                 0.000007   L74,L3760 
Oxygen  1s22s22p3    35.12112                  0.00006    L11267,L10621 
Oxygen  1s22s22p2    [54.93554]                 0.00012    L11770 
Oxygen  1s22s22p    77.41350                  0.00025    L648 
Oxygen  Be  1s22s2    113.8990                   0.0005     L7288 
Oxygen  Li  1s22s    [138.1189]                  0.0021     L4713 
Oxygen  He  1s2    [739.32682]                 0.00006    L10054 
Oxygen  1s    (871.40988)                 0.00003    L7188 

If you did not find the data you need, please inform the ASD Team.

[ASD Home][Lines Query][Levels Query][List of Spectra][Ground States and Ionization Energies][Bibliography][Help] NIST Physical Measurement Laboratory