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NIST Atomic Spectra Database
Ionization Energies Data

F (all spectra)
9 Data Rows Found 

Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2020). NIST Atomic Spectra Database (ver. 5.8), [Online]. Available: https://physics.nist.gov/asd [2021, January 25]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

 At. Num.   Ion  Charge   El.  name   Ionization  Energy 
 (eV) 
Uncertainty
 (eV) 
 References 
Fluorine    17.42282                 0.00005   L7481,L526 
+1  Fluorine    34.97081                 0.00012   L369 
+2  Fluorine    [62.70798]                0.00025   L11770 
+3  Fluorine    [87.175]                  0.017     L11770 
+4  Fluorine    [114.249]                  0.006     L11770 
+5  Fluorine    157.16311                 0.00025   L6491 
+6  Fluorine    [185.1868]                 0.0006    L6335 
+7  Fluorine    [953.89805]                0.00010   L10054 
+8  Fluorine    (1 103.11748)                0.00005   L7188 

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[ASD Home][Lines Query][Levels Query][List of Spectra][Ground States and Ionization Energies][Bibliography][Help] NIST Physical Measurement Laboratory