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NIST Atomic Spectra Database
Ionization Energies Data

Al (all spectra)
13 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, April 15]. 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 a   Ground  Level   Ionization  Energy 
 (eV) 
Uncertainty
 (eV) 
 References 
13  Aluminum  Al  [Ne]3s23p   21/2    5.985769                 0.000003   L7215,L10321 
13  Aluminum  Mg  [Ne]3s2   1S0    18.82855                  0.00005    L7215 
13  Aluminum  Na  [Ne]3s   2S1/2    28.447642                 0.000025   L4714,L277 
13  Aluminum  Ne  1s22s22p6   1S0    119.9924                   0.0019     L4714,L2829 
13  Aluminum  1s22s22p5   23/2    [153.8252]                  0.0025     L4714,L3565 
13  Aluminum  1s22s22p4   3P2    [190.49]                    0.05       L7215 
13  Aluminum  1s22s22p3   43/2    [241.76]                    0.09       L7215 
13  Aluminum  1s22s22p2   3P0    [284.64]                    0.07       L11770 
13  Aluminum  1s22s22p   21/2    [330.21]                    0.04       L11770 
13  Aluminum  Be  1s22s2   1S0    [398.65]                    0.06       L11770 
13  Aluminum  Li  1s22s   2S1/2    (442.005)                   0.007      L16264c99 
13  Aluminum  He  1s2   1S0    (2 085.97702)                 0.00020    L12128 
13  Aluminum  1s   2S1/2    (2 304.14007)                 0.00025    L7188 
Notes:
Designations used in the ground shell lists:
[Ne] = 1s22s22p6

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