Thorium dioxide
(Redirected from Thorium(IV) oxide)
Thorium dioxide | |
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Other names | Thorium(IV) oxide Thoria Thorianite |
Identifiers | |
InChI | InChI=1/2O.Th/q2*-2;+4 |
InChIKey | DNNLEMIRRGUGOZ-UHFFFAOYAA |
Standard InChI | InChI=1S/2O.Th/q2*-2;+4 |
Standard InChIKey | DNNLEMIRRGUGOZ-UHFFFAOYSA-N |
CAS number | [ | ]
EC number | |
ChemSpider | |
Properties[1] | |
Chemical formula | ThO2 |
Molar mass | 264.04 g mol−1 |
Appearance | white solid |
Density | 9.86 g cm−3 |
Melting point |
3220(50) °C |
Boiling point |
ca. 4400 °C |
Solubility in water | insoluble |
Structure[2] | |
Space group | Fm3m |
Lattice constant | a = 559.2 pm |
Thermochemistry[3] | |
Std enthalpy of formation ΔfH |
−1226.4(35) kJ mol−1 |
Standard molar entropy S |
65.23(20) J K−1 mol−1 |
Related compounds | |
Other anions | Thorium disulfide Thorium diselenide Thorium ditelluride |
Other cations | Protactinium dioxide Uranium dioxide Zirconium dioxide Hafnium dioxide |
Other compounds | Thorium monoxide Thorium sesquioxide |
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
Thorium dioxide, ThO2, also known as thoria, is the main oxide of thorium.
Notes and references
Notes
References
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-157. ISBN 0-8493-0462-8
- ↑ Wickleder, Mathias S.; Fourest, Blandine; Dorhout, Peter K. Thorium. 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 3, pp 52–160. doi:10.1007/1-4020-3598-5_3, <http://radchem.nevada.edu/classes/rdch710/files/thorium.pdf>.
- ↑ Thorium dioxide. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3D1S/2O.Th>. (accessed 9 January 2011).
External links
See also the corresponding article on Wikipedia. |
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