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| NIST Atomic Spectra Database Ionization Energies Data
K (all spectra) |
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, May 2]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
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At. num | El. Name | Isoel. Seq. | Ground Shells (a) | Ground Level | Ionization Energy (eV) | Uncertainty (eV) | References
--------|-----------|-------------|-------------------|--------------|--------------------------------------|----------------------|-------------------
19 | Potassium | K | [Ar].4s | 2S<1/2> | 4.34066373 | 0.00000009 | L5451,L5783,L7185
19 | Potassium | Ar | [Ne].3s2.3p6 | 1S0 | 31.62500 | 0.00019 | L12188
19 | Potassium | Cl | [Ne].3s2.3p5 | 2P*<3/2> | [45.8031] | 0.0017 | L11770
19 | Potassium | S | [Ne].3s2.3p4 | 3P<2> | [60.917] | 0.019 | L11770
19 | Potassium | P | [Ne].3s2.3p3 | 4S*<3/2> | [82.66] | 0.16 | L241
19 | Potassium | Si | [Ne].3s2.3p2 | 3P0 | [99.44] | 0.20 | L7185
19 | Potassium | Al | [Ne].3s2.3p | 2P*<1/2> | 117.56 | 0.11 | L7185
19 | Potassium | Mg | [Ne].3s2 | 1S0 | [154.87] | 0.05 | L12392
19 | Potassium | Na | [Ne].3s | 2S<1/2> | [175.8174] | 0.0025 | L4344
19 | Potassium | Ne | 1s2.2s2.2p6 | 1S0 | [503.67] | 0.07 | L11770
19 | Potassium | F | 1s2.2s2.2p5 | 2P*<3/2> | [565.6] | 0.7 | L11770
19 | Potassium | O | 1s2.2s2.2p4 | 3P<2> | [631.1] | 0.9 | L11770
19 | Potassium | N | 1s2.2s2.2p3 | 4S*<3/2> | [714.7] | 0.5 | L11770
19 | Potassium | C | 1s2.2s2.2p2 | 3P0 | [786.3] | 0.3 | L11770
19 | Potassium | B | 1s2.2s2.2p | 2P*<1/2> | [860.92] | 0.25 | L11770
19 | Potassium | Be | 1s2.2s2 | 1S0 | [967.7] | 0.3 | L11770
19 | Potassium | Li | 1s2.2s | 2S<1/2> | (1034.542) | 0.007 | L16264c99
19 | Potassium | He | 1s2 | 1S0 | (4610.80714) | 0.00025 | L21139
19 | Potassium | H | 1s | 2S<1/2> | (4934.04979) | 0.00005 | L19200
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Notes:
(a) Designations used in the ground shell lists:
[Ne] = 1s2.2s2.2p6
[Ar] = 1s2.2s2.2p6.3s2.3p6
If you did not find the data you need, please inform the ASD Team.
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