Data:Physical and thermochemical properties of the elements
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| Element | Z | Ar | Standard state |
Tm/°C | Tb/°C | ρ g cm−3 |
S J K−1 mol−1 |
H kJ mol−1 |
ΔatH kJ mol−1 |
ΔfusH kJ mol−1 |
ΔvapH kJ mol−1 |
Notes Refs. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Actinium | 89 | [note 1] | Ac (cr) | 1050 | 3300 | 10.07 | 406 | 10.5 | 293 | [1][2][note 2] | ||
| Aluminium | 13 | 26.981 5386(8) | Al (cr) | 660.37 | 2467 | 2.699 | 28.30(10) | 4.540(20) | +330.0(40) | 10.56 | 290.8 | [3][4] |
| Americium | 95 | [note 1] | Am (cr) | 876 | 2067 | 13.671 | 55 | 14.4 | 230.2 | [5][note 3] |
Notes
- ↑ 1.0 1.1 This element has no stable isotopes and no characteristic terrestrial abundance: no standard atomic weight can be given.
- ↑ Many of the properties of actinium are only known through estimation and/or extrapolation. Several estimates of the melting point and thermodynamic properties have been made; the boiling point was estimated on the basis of vapour pressure measurements. The density was determined by X-ray crystallography.
- ↑ The boiling point and thermodynamic properties of americium are calculated values.
References
- ↑ Kirby, H. W.; Morss, L. R. Actinium. In The Chemistry of the Actinide and Transactinide Elements, 3rd ed.; Morss, Lester R.; Edelstein, Norman M.; Fuger, Jean, Eds.; Springer: Dordrecht, the Netherlands, 2006; Vol. 1, Chapter 2, pp 18–51. doi:10.1007/1-4020-3598-5_2, <http://radchem.nevada.edu/classes/rdch710/files/actinium.pdf>.
- ↑ Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984. ISBN 0-08-022057-6.
- ↑ Cox, J. D.; Wagman, D. D.; Medvedev, V. A. CODATA Key Values for Thermodynamics; Hemisphere: New York, 1989. ISBN 0891167587, <http://www.codata.org/resources/databases/key1.html>.
- ↑ Aluminium. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3D1S/Al>. (accessed 27 December 2010).
- ↑ Runde, Wolfgang H.; Schulz, Wallace W. Americium. In The Chemistry of the Actinide and Transactinide Elements, 3rd ed.; Morss, Lester R.; Edelstein, Norman M.; Fuger, Jean, Eds.; Springer: Dordrecht, the Netherlands, 2006; Vol. 2, Chapter 8, pp 1265–1395. doi:10.1007/1-4020-3598-5_8, <http://radchem.nevada.edu/classes/rdch710/files/actinium.pdf>.
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