potassium

• Formula: K
• Molecular weight: 39.0983
• IUPAC Standard InChI: InChI=1S/K Copy

  
• IUPAC Standard InChIKey: ZLMJMSJWJFRBEC-UHFFFAOYSA-N Copy
• CAS Registry Number: 7440-09-7
• Chemical structure:
  This structure is also available as a 2d Mol file
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• Information on this page:
  • Gas phase ion energetics data
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
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  • X-ray Photoelectron Spectroscopy Database, version 5.0
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Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data evaluated as indicated in comments:
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to K⁺ (ion structure unspecified)

Ionization energy determinations

Ion clustering data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

( • 2) +  = ( • 3)

By formula: (K⁺ • 2K) + K = (K⁺ • 3K)

( • 3) +  = ( • 4)

By formula: (K⁺ • 3K) + K = (K⁺ • 4K)

( • 4) +  = ( • 5)

By formula: (K⁺ • 4K) + K = (K⁺ • 5K)

( • 5) +  = ( • 6)

By formula: (K⁺ • 5K) + K = (K⁺ • 6K)

( • 6) +  = ( • 7)

By formula: (K⁺ • 6K) + K = (K⁺ • 7K)

( • 7) +  = ( • 8)

By formula: (K⁺ • 7K) + K = (K⁺ • 8K)

( • 8) +  = ( • 9)

By formula: (K⁺ • 8K) + K = (K⁺ • 9K)

( • 9) +  = ( • 10)

By formula: (K⁺ • 9K) + K = (K⁺ • 10K)

( • 10) +  = ( • 11)

By formula: (K⁺ • 10K) + K = (K⁺ • 11K)

( • 11) +  = ( • 12)

By formula: (K⁺ • 11K) + K = (K⁺ • 12K)

( • 12) +  = ( • 13)

By formula: (K⁺ • 12K) + K = (K⁺ • 13K)

( • 13) +  = ( • 14)

By formula: (K⁺ • 13K) + K = (K⁺ • 14K)

( • 14) +  = ( • 15)

By formula: (K⁺ • 14K) + K = (K⁺ • 15K)

( • 15) +  = ( • 16)

By formula: (K⁺ • 15K) + K = (K⁺ • 16K)

( • 16) +  = ( • 17)

By formula: (K⁺ • 16K) + K = (K⁺ • 17K)

( • 17) +  = ( • 18)

By formula: (K⁺ • 17K) + K = (K⁺ • 18K)

( • 18) +  = ( • 19)

By formula: (K⁺ • 18K) + K = (K⁺ • 19K)

( • 19) +  = ( • 20)

By formula: (K⁺ • 19K) + K = (K⁺ • 20K)

( • 20) +  = ( • 21)

By formula: (K⁺ • 20K) + K = (K⁺ • 21K)

( • 21) +  = ( • 22)

By formula: (K⁺ • 21K) + K = (K⁺ • 22K)

( • 22) +  = ( • 23)

By formula: (K⁺ • 22K) + K = (K⁺ • 23K)

( • 23) +  = ( • 24)

By formula: (K⁺ • 23K) + K = (K⁺ • 24K)

References

Go To: Top, Gas phase ion energetics data, Ion clustering data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Lide, 1992
Lide, D.R. (Editor), Ionization potentials of atoms and atomic ions in Handbook of Chem. and Phys., 1992, 10-211. [all data]

Kelly, 1987
Kelly, R.L., Atomic and ionic spectrum lines of hydrogen through kryton, J. Phys. Chem. Ref. Data, 1987, 16. [all data]

Sugar and Corliss, 1985
Sugar, J.; Corliss, C., Atomic energy levels of the iron period elements: Potassium through nickel, J. Phys. Chem. Ref. Data, 1985, 14. [all data]

Farber, Srivastava, et al., 1982
Farber, M.; Srivastava, R.D.; Moyer, J.W., Mass spectrometric determination of the thermodynamics of potassium hydroxide and minor potassium-containing species required in magnetohydrodynamic power systems, J. Chem. Thermodyn., 1982, 14, 1103. [all data]

Zmbov, Wu, et al., 1977
Zmbov, K.F.; Wu, C.H.; Ihle, H.R., A mass spectrometric study of heteronuclear diatomic alkali metal molecules. Dissociation energies ionization potentials of NaLi, KLi, NaK, J. Chem. Phys., 1977, 67, 4603. [all data]

Simmons, Lowden, et al., 1977
Simmons, L.L.; Lowden, L.F.; Ehlert, T.C., A mass spectrometric study of K₂CO₃ and K₂O, J. Phys. Chem., 1977, 81, 706. [all data]

Williams and Potts, 1976
Williams, T.A.; Potts, A.W., Complexities in the HeI photoelectron spectra of alkali metal vapours, J. Electron Spectrosc. Relat. Phenom., 1976, 8, 331. [all data]

Moore, 1970
Moore, C.E., Ionization potentials and ionization limits derived from the analyses of optical spectra, Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.), 1970, 34, 1. [all data]

Brechignac, Cahuzac, et al., 1990
Brechignac, C.; Cahuzac, P.; Carlier, F.; De Frutos, M.; Leyniger, J., Cohesive Energies of (K)n+ 5<n<200 from Photoevaporation Experiments, J. Chem. Phys., 1990, 93, 10, 7449, https://doi.org/10.1063/1.459418 . [all data]

Notes

Go To: Top, Gas phase ion energetics data, Ion clustering data, References

• Symbols used in this document:
  

  IE (evaluated)	Recommended ionization energy
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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