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

Te (all spectra)
52 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) 
  72 669.006         
  150 000             
  224 530             
  301 776             
  477 900             
  (557 000)            
  1 001 750             
  (1 153 000)            
  (1 347 000)            
  (1 541 000)            
  (1 734 000)            
  (1 976 000)            
  (2 194 000)            
  (2 412 000)            
  (2 645 000)            
  (2 855 000)            
  (3 718 000)            
  (3 960 000)            
  (4 210 000)            
  (4 476 000)            
  (4 831 000)            
  (5 105 000)            
  (5 718 000)            
  [6 017 900]            
  (10 517 000)            
  (11 106 000)            
  (11 735 000)            
  (12 405 000)            
  (13 050 000)            
  (13 768 000)            
  (14 542 000)            
  (15 236 000)            
  (15 962 000)            
  (16 663 000)            
  (18 623 000)            
  (19 244 000)            
  (19 938 000)            
  (20 583 000)            
  (21 777 000)            
  (22 487 000)            
  (23 826 000)            
  [24 527 000]            
  (56 636 000)            
  (58 419 000)            
  (60 371 000)            
  (62 218 000)            
  (66 460 000)            
  (68 549 000)            
  (71 146 000)            
  (72 919 200)            
  (300 010 200)            
  (307 924 240)            
Notes:
a Uncertainty of the listed value is unknown.

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