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NIST Atomic Spectra Database
Ionization Energies Data

Ne (all spectra)
10 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 [2025, January 19]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

 At. Num.   El.  name   Isoel.  Seq.   Ground  Shells   Ground  Level   Ionization  Energy 
 (eV) 		 Uncertainty
 (eV) 		  References 
10  Neon  Ne  1s22s22p6   1S0    21.564541                 0.000007   L8826,L1407 
10  Neon  F  1s22s22p5   2P°3/2    40.96297                  0.00004    L1406 
10  Neon  O  1s22s22p4   3P2    63.4233                   0.0003     L9091 
10  Neon  N  1s22s22p3   4S°3/2    [97.1900]                  0.0025     L11782 
10  Neon  C  1s22s22p2   3P0    126.247                    0.012      L11744 
10  Neon  B  1s22s22p   2P°1/2    157.934                    0.005      L9340 
10  Neon  Be  1s22s2   1S0    207.271                    0.012      L9089 
10  Neon  Li  1s22s   2S1/2    [239.0970]                  0.0019     L9090 
10  Neon  He  1s2   1S0    (1 195.8082)                  0.0004     L21139 
10  Neon  H  1s   2S1/2    (1 362.199256)                0.000004   L19200 

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