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NIST Atomic Spectra Database
Ionization Energies Data

Bi (all spectra)
83 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) 
  58 761.65         
  134 720            
  206 242.0          
  365 900            
  442 440            
  [713 000]           
  (831 000)           
  (984 000)           
  (1 153 000)           
  (1 299 000)           
  (1 476 000)           
  (1 678 000)           
  (1 847 000)           
  (2 033 000)           
  [2 199 000]           
  [2 986 000]           
  (3 296 000)           
  (3 520 000)           
  (3 743 000)           
  (4 170 000)           
  (4 420 000)           
  (5 010 000)           
  (5 310 000)           
  (5 570 000)           
  (6 030 000)           
  (6 530 000)           
  (7 022 000)           
  (7 520 000)           
  (8 010 000)           
  (8 510 000)           
  (9 010 000)           
  (9 550 000)           
  (10 050 000)           
  (10 550 000)           
  (11 100 000)           
  (11 600 000)           
  (12 100 000)           
  (14 389 000)           
  (14 841 000)           
  (15 341 000)           
  (15 865 000)           
  (16 365 000)           
  (16 857 000)           
  (17 664 000)           
  (18 172 000)           
  (18 720 000)           
  (19 236 000)           
  (21 301 000)           
  (21 801 000)           
  (22 350 000)           
  (22 866 000)           
  (24 826 000)           
  (25 415 000)           
  (26 850 000)           
  [27 437 000]           
  (45 159 000)           
  (46 296 000)           
  (47 522 000)           
  (48 829 000)           
  (50 071 000)           
  (51 281 000)           
  (53 620 000)           
  (54 878 000)           
  (56 273 000)           
  (57 564 000)           
  (61 153 000)           
  (62 274 000)           
  (63 500 000)           
  (64 629 000)           
  (70 840 000)           
  (72 162 000)           
  (74 776 000)           
  (76 026 000)           
  (162 335 000)           
  (165 368 000)           
  (168 731 000)           
  (171 820 000)           
  (194 807 000)           
  (198 743 000)           
  (203 736 000)           
  (206 937 000)           
  (824 716 200)           
  (839 892 400)           
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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