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NIST Atomic Spectra Database
Ionization Energies Data

Be (all spectra)
4 Data Rows Found 

Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2019). NIST Atomic Spectra Database (ver. 5.7.1), [Online]. Available: https://physics.nist.gov/asd [2019, November 11]. 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 
Beryllium  Be  1s22s2   1S0    9.322699                  0.000007    L5964 
Beryllium  Li  1s22s   2S1/2    18.21115                   0.00004     L12158 
Beryllium  He  1s2   1S0    [153.896203]                 0.000004    L10054 
Beryllium  1s   2S1/2    (217.7185843)                0.0000017   L3620c97 

If you did not find the data you need, please inform the ASD Team.

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