Difference between revisions of "Boron"
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|melting-point = ''ca.'' 2300 °C | |melting-point = ''ca.'' 2300 °C | ||
|boiling-point = ''ca.'' 2550 °C | |boiling-point = ''ca.'' 2550 °C | ||
| − | |electronegativity = | + | |chem-ref = <ref>{{Allred (1961)}}.</ref> |
| + | |electronegativity = 2.04 (Pauling) | ||
|solubility = insoluble | |solubility = insoluble | ||
|IE-ref = <ref>{{NBS 34}}.</ref> | |IE-ref = <ref>{{NBS 34}}.</ref> | ||
|IE1 = 8.298 024(18) eV<br/>800.6377(17) kJ mol<sup>−1</sup> | |IE1 = 8.298 024(18) eV<br/>800.6377(17) kJ mol<sup>−1</sup> | ||
| + | |EA-ref = <ref>{{citation | last1 = Scheer | first1 = Michael | last2 = Bilodeau | first2 = René C. | last3 = Haugen | first3 = Harold K. | title = Negative ion of boron: An experimental study of the <sup>3</sup>''P'' ground state | journal = Phys. Rev. Lett. | year = 1998 | volume = 80 | issue = 12 | pages = 2562–65 | doi = 10.1103/PhysRevLett.80.2562}}.</ref> | ||
| + | |EA1 = 0.279 743(44) eV<br/>26.9910(42) kJ mol<sup>−1</sup> | ||
| + | |radius-ref = <ref>{{Shannon (1976)}}.</ref> | ||
| + | |covalent-radius = 84 pm | ||
|thermo-ref = <ref>{{CODATA thermo}}.</ref> | |thermo-ref = <ref>{{CODATA thermo}}.</ref> | ||
|entropy = 5.90(8) J K<sup>−1</sup> mol<sup>−1</sup> | |entropy = 5.90(8) J K<sup>−1</sup> mol<sup>−1</sup> | ||
Revision as of 17:07, 21 September 2010
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Boron (symbol: B) is a chemical element.
Notes and references
Notes
References
- ↑ Boron. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3DInChI=1S/B>. (accessed 21 September 2010).
- ↑ Allred, A. L. Electronegativity values from thermochemical data. J. Inorg. Nucl. Chem. 1961, 17 (3–4), 215–21. DOI: 10.1016/0022-1902(61)80142-5.
- ↑ Moore, Charlotte 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, 1–22, <http://www.nist.gov/data/nsrds/NSRDS-NBS34.pdf>.
- ↑ Scheer, Michael; Bilodeau, René C.; Haugen, Harold K. Negative ion of boron: An experimental study of the 3P ground state. Phys. Rev. Lett. 1998, 80 (12), 2562–65. DOI: 10.1103/PhysRevLett.80.2562.
- ↑ Shannon, R. D. Revised effective ionic radii and systematic studies of interatomic distances in halids and chalcogenides. Acta Crystallogr. A 1976, 32 (5), 751–67. DOI: 10.1107/S0567739476001551.
- ↑ 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>.
External links
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See also the corresponding article on Wikipedia. |
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