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NIST Atomic Spectra Database
Ionization Energies Data

Hg (all spectra)
80 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) 
  84 184.15         
  151 284.4          
  278 200            
  391 600            
  493 600            
  618 000            
  750 000            
  (919 000)           
  (1 081 000)           
  (1 234 000)           
  (1 395 000)           
  [1 554 000]           
  [2 233 000]           
  (2 474 000)           
  (2 680 000)           
  (2 880 000)           
  (3 240 000)           
  (3 460 000)           
  (3 850 000)           
  (4 260 000)           
  (4 500 000)           
  (4 780 000)           
  (5 240 000)           
  (5 694 000)           
  (6 150 000)           
  (6 600 000)           
  (7 060 000)           
  (7 510 000)           
  (8 000 000)           
  (8 460 000)           
  (8 920 000)           
  (9 380 000)           
  (9 840 000)           
  (10 300 000)           
  (12 494 000)           
  (12 929 000)           
  (13 397 000)           
  (13 897 000)           
  (14 357 000)           
  (14 833 000)           
  (15 550 000)           
  (16 042 000)           
  (16 550 000)           
  (17 042 000)           
  (18 986 000)           
  (19 454 000)           
  (19 986 000)           
  (20 478 000)           
  (22 140 000)           
  (22 705 000)           
  (24 043 000)           
  [24 599 200]           
  (40 771 000)           
  (41 868 000)           
  (43 030 000)           
  (44 280 000)           
  (45 457 000)           
  (46 619 000)           
  (48 724 000)           
  (49 942 000)           
  (51 265 000)           
  (52 491 000)           
  (55 918 000)           
  (56 991 000)           
  (58 161 000)           
  (59 249 000)           
  (64 565 000)           
  (65 831 000)           
  (68 291 000)           
  (69 493 000)           
  (149 624 000)           
  (152 544 000)           
  (155 762 000)           
  (158 730 000)           
  (178 426 000)           
  (182 144 000)           
  (186 863 000)           
  (189 896 000)           
  (759 166 700)           
  (773 471 100)           
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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