Template:Infobox boron
boron (β-rhombohedral)[1] | |||||||||||||||||||||
| Boron | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pronunciation | /ˈbɔːrɒn/ | ||||||||||||||||||||
| Allotropes | α-, β-rhombohedral, β-tetragonal (and more) | ||||||||||||||||||||
| Appearance | black-brown | ||||||||||||||||||||
| Standard atomic weight Ar°(B) | |||||||||||||||||||||
| [10.806, 10.821][2] | |||||||||||||||||||||
| Boron in the periodic table | |||||||||||||||||||||
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| Group | group 13 (boron group) | ||||||||||||||||||||
| Period | period 2 | ||||||||||||||||||||
| Block | p-block | ||||||||||||||||||||
| Electron configuration | [He] 2s2 2p1 | ||||||||||||||||||||
| Electrons per shell | 2, 3 | ||||||||||||||||||||
| Physical properties | |||||||||||||||||||||
| Phase at STP | solid | ||||||||||||||||||||
| Melting point | 2349 K (2076 °C, 3769 °F) | ||||||||||||||||||||
| Boiling point | 4200 K (3927 °C, 7101 °F) | ||||||||||||||||||||
| Density when liquid (at m.p.) | 2.08 g/cm3 | ||||||||||||||||||||
| Heat of fusion | 50.2 kJ/mol | ||||||||||||||||||||
| Heat of vaporization | 508 kJ/mol | ||||||||||||||||||||
| Molar heat capacity | 11.087 J/(mol·K) | ||||||||||||||||||||
Vapor pressure
| |||||||||||||||||||||
| Atomic properties | |||||||||||||||||||||
| Oxidation states | −5, −1, 0,[3] +1, +2, +3[4][5] (a mildly acidic oxide) | ||||||||||||||||||||
| Electronegativity | Pauling scale: 2.04 | ||||||||||||||||||||
| Ionization energies |
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| Atomic radius | empirical: 90 pm | ||||||||||||||||||||
| Covalent radius | 84±3 pm | ||||||||||||||||||||
| Van der Waals radius | 192 pm | ||||||||||||||||||||
| Other properties | |||||||||||||||||||||
| Natural occurrence | primordial | ||||||||||||||||||||
| Crystal structure | rhombohedral | ||||||||||||||||||||
| Speed of sound thin rod | 16,200 m/s (at 20 °C) | ||||||||||||||||||||
| Thermal expansion | β form: 5–7 µm/(m⋅K) (at 25 °C)[6] | ||||||||||||||||||||
| Thermal conductivity | 27.4 W/(m⋅K) | ||||||||||||||||||||
| Electrical resistivity | ~106 Ω⋅m (at 20 °C) | ||||||||||||||||||||
| Magnetic ordering | diamagnetic[7] | ||||||||||||||||||||
| Molar magnetic susceptibility | −6.7·10−6 cm3/mol[8] | ||||||||||||||||||||
| Mohs hardness | ~9.5 | ||||||||||||||||||||
| CAS Number | 7440-42-8 | ||||||||||||||||||||
| History | |||||||||||||||||||||
| Discovery | Joseph Louis Gay-Lussac and Louis Jacques Thénard[9] (30 June 1808) | ||||||||||||||||||||
| First isolation | Humphry Davy[10] (9 July 1808) | ||||||||||||||||||||
| Isotopes of boron | |||||||||||||||||||||
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| Be ← |
→ C | |
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| Data sets read by {{Infobox element}} | |
|---|---|
| Name and identifiers | |
| Symbol etymology (11 non-trivial) | |
| Top image (caption, alt) | |
| Pronunciation | |
| Allotropes (overview) | |
| Group (overview) | |
| Period (overview) | |
| Block (overview) | |
| Natural occurrence | |
| Phase at STP | |
| Oxidation states | |
| Spectral lines image | |
| Electron configuration (cmt, ref) | |
| Isotopes | |
| Standard atomic weight | |
| most stable isotope | |
| Wikidata * | |
| * Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (11) · (this table: ) | |
References
- ↑ Van Setten et al. 2007, pp. 2460–1
- ↑ "Standard Atomic Weights: Boron". CIAAW. 2009.
- ↑ Braunschweig, H.; Dewhurst, R. D.; Hammond, K.; Mies, J.; Radacki, K.; Vargas, A. (2012). "Ambient-Temperature Isolation of a Compound with a Boron-Boron Triple Bond". Science. 336 (6087): 1420–2. Bibcode:2012Sci...336.1420B. doi:10.1126/science.1221138. PMID 22700924. S2CID 206540959.
- ↑ Zhang, K.Q.; Guo, B.; Braun, V.; Dulick, M.; Bernath, P.F. (1995). "Infrared Emission Spectroscopy of BF and AIF" (PDF). J. Molecular Spectroscopy. 170 (1): 82. Bibcode:1995JMoSp.170...82Z. doi:10.1006/jmsp.1995.1058.
- ↑ Schroeder, Melanie. Eigenschaften von borreichen Boriden und Scandium-Aluminium-Oxid-Carbiden (PDF) (in German). p. 139.
- ↑ Holcombe Jr., C. E.; Smith, D. D.; Lorc, J. D.; Duerlesen, W. K.; Carpenter; D. A. (October 1973). "Physical-Chemical Properties of beta-Rhombohedral Boron". High Temp. Sci. 5 (5): 349–57.
- ↑ Lide, David R., ed. (2000). Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics (PDF). CRC press. ISBN 0-8493-0481-4. Archived from the original (PDF) on 2012-01-12.
- ↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
- ↑ Gay Lussac, J.L.; Thenard, L.J. (1808). "Sur la décomposition et la recomposition de l'acide boracique". Annales de chimie. 68: 169–174.
- ↑ Davy H (1809). "An account of some new analytical researches on the nature of certain bodies, particularly the alkalies, phosphorus, sulphur, carbonaceous matter, and the acids hitherto undecomposed: with some general observations on chemical theory". Philosophical Transactions of the Royal Society of London. 99: 39–104. doi:10.1098/rstl.1809.0005. S2CID 98814859.
Five of these are named references. They may be cited in the containing article as
- <ref name="v1" /> for the source Infrared Emission Spectroscopy of BF and AIF
- <ref name="magnet" /> for the source from Handbook of Chemistry and Physics
- <ref name="NISTic" /> for the source Atomic Weights and Isotopic Compositions for All Elements
- <ref name="Lussac" /> for the source by Gay-Lussac
- <ref name="Davy" /> for the source by Davy
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| Data sets read by {{Infobox element}} | |
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| Name and identifiers | |
| Symbol etymology (11 non-trivial) | |
| Top image (caption, alt) | |
| Pronunciation | |
| Allotropes (overview) | |
| Group (overview) | |
| Period (overview) | |
| Block (overview) | |
| Natural occurrence | |
| Phase at STP | |
| Oxidation states | |
| Spectral lines image | |
| Electron configuration (cmt, ref) | |
| Isotopes | |
| Standard atomic weight | |
| most stable isotope | |
| Wikidata * | |
| * Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (11) · (this table: ) | |
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| Element | Content page | Notes | |||||||
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| per | E | disc./ theor. |
Page | Name | T: Infobox (E) | Isotopes of (E) | T: Isobox (E) | Page set pattern (4 Jan 2023) |
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| ⑦ | E118 (Og) | disc. | Article | Oganesson, cat:E118 (0) |
{{IB oganesson}} | Isotopes of E118, cat:Isotopes E118 (0) |
{{Isobox oganesson}} | E118[Set 1] | compare |
| ⑧ | E119 (Uue) | theor. | Article | Ununennium, cat:E119 (0) |
{{IB ununennium}} | Isotopes of E119, cat:Isotopes E119 (0) |
{{Isobox E119}} | E119[Set 2] | period 8 start |
| ⑧ | E120 (Ubn) | theor. | Article | Unbinilium, cat:E120 (0) |
{{IB unbinilium}} | Isotopes of E120, cat:Isotopes E120 (0) |
{{Isobox E120}} | E119[Set 2] | |
| ⑧ | E121 (Ubu) | theor. | Article | Unbiunium, cat:E121 (0) |
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{{Isobox E122}} | E121[Set 3] | |
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{{IB unbitrium}} | Isotopes of E123, cat:Isotopes E123 (0) |
{{Isobox E123}} | E127[Set 4] | |
| ⑧ | E124 (Ubq) | theor. | Article | Unbiquadium, cat:E124 (0) |
{{IB unbiquadium}} | Isotopes of unbiquadium R, cat:Isotopes E124 (0) |
{{Isobox E124}} | E121[Set 3] | |
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{{Isobox E184}} | E127[Set 4] | |
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{{Isobox E185}} | E185[Set 5] | |
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See a monthly parameter usage report for Template:Infobox boron in articles based on its TemplateData.
TemplateData for Infobox boron No description.
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References
See also
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Tracking categories
[change source]Index by periodic table
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