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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, October 26]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

 Ionization  Energy 
 (cm-1) 
  61 671.05         
  121 267.64         
  646 402            
  [881 285]           
  [1 139 940]           
  [1 506 300]           
  [1 814 870]           
  [2 144 820]           
  [2 645 380]           
  (2 964 000)           
  (14 209 915.2)         
  (15 829 951.83)        
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