Actinium
- Formula: Ac
- Molecular weight: 227
- IUPAC Standard InChI: InChI=1S/Ac
- IUPAC Standard InChIKey: QQINRWTZWGJFDB-UHFFFAOYSA-N
- CAS Registry Number: 7440-34-8
- Chemical structure:
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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
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| IE (evaluated) | 5.17 ± 0.12 | eV | N/A | N/A | L |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 5.17 | EVAL | Lide, 1992 | LL |
| 5.17 ± 0.12 | EVAL | Sugar, 1974 | LLK |
| 5.17 ± 0.12 | S | Sugar, 1973 | LLK |
| 6.9 ± 0.6 | S | Finkelnburg and Humbach, 1955 | RDSH |
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.
Lide, 1992
Lide, D.R. (Editor),
Ionization potentials of atoms and atomic ions
in Handbook of Chem. and Phys., 1992, 10-211. [all data]
Sugar, 1974
Sugar, J.,
Revised ionization energies of the neutral actinides,
J. Chem. Phys., 1974, 60, 4103. [all data]
Sugar, 1973
Sugar, J.,
Ionization energies of the neutral actinides,
J. Chem. Phys., 1973, 59, 788. [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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- Symbols used in this document:
IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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