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NIST Atomic Spectra Database
Ionization Energies Data

P (all spectra)
15 Data Rows Found 
Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2023). NIST Atomic Spectra Database (ver. 5.11), [Online]. Available: https://physics.nist.gov/asd [2024, April 26]. 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 
15  Phosphorus  P  [Ne]3s23p3   4S°3/2    10.486686                 0.000015   L5148 
15  Phosphorus  Si  [Ne]3s23p2   3P0    [19.76949]                 0.00004    L11770 
15  Phosphorus  Al  [Ne]3s23p   2P°1/2    30.20264                  0.00009    L7147 
15  Phosphorus  Mg  [Ne]3s2   1S0    51.44387                  0.00012    L7147 
15  Phosphorus  Na  [Ne]3s   2S1/2    65.02511                  0.00012    L7147,L2613 
15  Phosphorus  Ne  1s22s22p6   1S0    [220.430]                   0.005      L11770 
15  Phosphorus  F  1s22s22p5   2P°3/2    [263.57]                    0.06       L7147 
15  Phosphorus  O  1s22s22p4   3P2    [309.60]                    0.10       L7147 
15  Phosphorus  N  1s22s22p3   4S°3/2    [372.31]                    0.21       L11770 
15  Phosphorus  C  1s22s22p2   3P0    [424.40]                    0.09       L11770 
15  Phosphorus  B  1s22s22p   2P°1/2    [479.44]                    0.05       L11770 
15  Phosphorus  Be  1s22s2   1S0    [560.62]                    0.10       L11770 
15  Phosphorus  Li  1s22s   2S1/2    (611.741)                   0.007      L16264c99 
15  Phosphorus  He  1s2   1S0    (2 816.90868)                 0.00019    L21139 
15  Phosphorus  H  1s   2S1/2    (3 069.842145)                0.000014   L19200 
Notes:
a Designations used in the ground shell lists:
[Ne] = 1s22s22p6

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