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NIST Atomic Spectra Database
Ionization Energies Data

Mg (all spectra)
12 Data Rows Found 
Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2024). NIST Atomic Spectra Database (ver. 5.12), [Online]. Available: https://physics.nist.gov/asd [2026, June 4]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

 Ionization  Energy 
 (eV) 
  7.646236              
  15.035271              
  80.1436                
  [109.2654]               
  [141.33]                 
  [186.76]                 
  [225.02]                 
  [265.924]                
  [327.99]                 
  (367.489)                
  (1 761.8049)               
  (1 962.663889)             
Notes:
a Uncertainty of the listed value is unknown.

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