Francium

• Formula: Fr
• Molecular weight: 223
• IUPAC Standard InChI: InChI=1S/Fr Copy

  
• IUPAC Standard InChIKey: KLMCZVJOEAUDNE-UHFFFAOYSA-N Copy
• CAS Registry Number: 7440-73-5
• 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
  • References
  • Notes
• Data at other public NIST sites:
  • NIST Atomic Spectra Database - Lines Holdings (on physics web site)
  • NIST Atomic Spectra Database - Levels Holdings (on physics web site)
  • NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
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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 compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

References

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

Andreev, Letokhov, et al., 1987
Andreev, S.V.; Letokhov, V.S.; Mishin, V.I., Laser resonance photoionization spectroscopy of Rydberg levels in Fr, Phys. Rev. Lett., 1987, 59, 1274. [all data]

Finkelnburg and Humbach, 1955
Finkelnburg, W.; Humbach, W., Ionisierungsenergien von Atomen und Atomionen, Naturwiss., 1955, 42, 35. [all data]

Notes

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