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National Institute of Standards and Technology NIST Physical Measurement Laboratory
NIST Atomic Spectra Database
Ionization Energies Data

Cd (all spectra)
48 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) 
  72 540.05         
  136 374.74         
  302 200            
  (411 000)           
  (548 000)           
  (702 000)           
  (847 000)           
  (1 049 000)           
  (1 210 000)           
  (1 395 000)           
  (1 573 000)           
  (1 758 000)           
  (2 460 000)           
  (2 654 000)           
  (2 887 000)           
  (3 105 000)           
  (3 396 000)           
  [3 650 100]           
  (4 138 000)           
  [4 405 300]           
  (7 767 000)           
  (8 275 000)           
  (8 832 000)           
  (9 412 000)           
  (9 977 000)           
  (10 647 000)           
  (11 300 000)           
  (11 913 000)           
  (12 566 000)           
  (13 187 000)           
  [14 941 000]           
  [15 469 200]           
  [16 114 000]           
  [16 868 000]           
  [17 707 700]           
  [18 150 000]           
  [19 575 100]           
  [20 152 690]           
  [47 092 000]           
  [48 706 000]           
  [50 465 000]           
  [52 143 000]           
  [55 406 000]           
  [57 337 000]           
  [59 797 000]           
  (61 362 220)           
  (253 669 990)           
  (260 852 490)           
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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