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NIST Atomic Spectra Database
Ionization Energies Data

Zn (all spectra)
30 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) 
  75 769.31         
  144 892.6          
  320 390            
  480 490            
  [666 000]           
  [871 000]           
  [1 080 000]           
  [1 403 000]           
  [1 637 000]           
  (1 920 000)           
  [2 213 000]           
  [2 507 000]           
  [3 368 100]           
  [3 656 700]           
  [3 957 200]           
  [4 355 300]           
  [4 660 100]           
  [4 946 300]           
  [5 625 800]           
  [5 947 260]           
  [14 895 800]           
  [15 817 000]           
  [16 816 000]           
  [17 858 000]           
  [19 018 700]           
  [20 095 000]           
  [21 534 000]           
  (22 438 310)           
  (95 697 196)           
  (99 923 562)           
Notes:
a Uncertainty of the listed value is unknown.

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

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