View source for Carbon

{{Infobox element
|name = carbon
|symbol = C
|left = [[boron]]
|right = [[nitrogen]]
|above = —
|below = [[Silicon|Si]]
|atomic-number = 6
|atomic-weight = 12.0107(8)
|configuration = [He] 2s<sup>2</sup> 2p<sup>2</sup>
|phys-ref = <ref name="NIST">{{NIST chemistry | name = Carbon | id = 1S/C | accessdate = 2010-09-22}}.</ref><ref name="G&E">{{Greenwood&Earnshaw1st|pages=296–378}}.</ref><ref group="Note">All values are for [[graphite]].</ref>
|melting-point = ''ca.'' 3800&nbsp;°C (4100&nbsp;K) at 9&nbsp;kbar
|sublimation-point = ''ca.'' 3850&nbsp;°C (4150&nbsp;K)
|density = 2.266 g cm<sup>−3</sup> (20&nbsp;°C)<ref group="Note">This is an idealized value for the density of graphite: real samples have lower densities because of crystal defects.</ref>
|resistivity = 40–500 µΩ cm (basal plane)<br/>0.2–1.0 Ω cm (''c''-direction)
|chem-ref = <ref name="G&E"/><ref>{{Allred (1961)}}.</ref>
|electronegativity = 2.55 (Pauling)
|solubility = insoluble, unreactive
|IE-ref = <ref>{{NSRDS-NBS 34}}.</ref>
|IE1 = 11.260 296(12) eV<br/>796.6930(12) kJ mol<sup>−1</sup>
|IE2 = 24.383 eV<br/>2352.6 kJ mol<sup>−1</sup>
|IE3 = 47.887 eV<br/>4620.4 kJ mol<sup>−1</sup>
|IE4 = 64.492 eV<br/>6222.5 kJ mol<sup>−1</sup>
|IE5 = 392.077 eV<br/>37 829.7 kJ mol<sup>−1</sup>
|IE6 = 489.981 eV<br/>47 276.0 kJ mol<sup>−1</sup>
|IE-total = 1030.080 eV<br/>99 387.6 kJ mol<sup>−1</sup>
|EA-ref = <ref>{{citation | last1 = Scheer | first1 = Michael | last2 = Bilodeau | first2 = René C. | last3 = Brodie | first3 = Cicely. A. | last4 = Haugen | first4 = Harold K. | title = Systematic study of the stable states of C<sup>−</sup>, Si<sup>−</sup>, Ge<sup>−</sup>, and Sn<sup>−</sup> via infrared laser spectroscopy | journal = Phys. Rev. A | year = 1998 | volume = 58 | issue = 4 | pages = 2844–56 | doi = 10.1103/PhysRevA.58.2844}}.</ref>
|EA1 = 1.262 119(20) eV<br/>121.7760(19) kJ mol<sup>−1</sup>
|radius-ref = <ref>{{Cordero et al. (2008)}}.</ref><ref>{{Bondi (1964)}}.</ref>
|covalent-radius = 76 pm (sp<sup>3</sup>); 73&nbsp;pm&nbsp;(sp<sup>2</sup>); 69&nbsp;pm&nbsp;(sp)
|vdw-radius = 170 pm
|thermo-ref = <ref>{{CODATA thermo}}.</ref>
|entropy = 5.74(10) J K<sup>−1</sup> mol<sup>−1</sup>
|enthalpy-atomization = 716.68(45) kJ mol<sup>−1</sup>
|entropy-atomization = 152.36(10) J K<sup>−1</sup> mol<sup>−1</sup>
|CAS-number = 7440-44-0
|EC-number = 231-153-3
|StdInChIkey = OKTJSMMVPCPJKN-UHFFFAOYSA-N
}}
'''Carbon''' (symbol:'''C''') is a [[chemical element]].

==Notes and references==
===Notes===
{{reflist|group=Note}}

===References===
{{reflist}}

==External links==
{{wikipedia|Carbon}}
*[http://www.webelements.com/carbon/ WebElements]

[[Category:Carbon| ]]
[[Category:Chemical elements]]

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