carbon
Chemical element with symbol C and atomic number 6; common element of all known life
Also known as element 6 · ₆C
- Symbol
- C
- Atomic number
- 6
- Mass
- 12.011 Da
1
Sources- 1.Stated in Pure and Applied Chemistry“Standard atomic weights of the elements 2021 (IUPAC Technical Report)”Retrieved 2022-05-06
- 12.011 Da
- Density
- 2.26 g/cm³
- , 3.51 g/cm³
- Discovered by
- Antoine Lavoisier(1789)
Overview
All data
211 statements · 16% with external sources · numbers in brackets are citations
- Oxidation state
- -4
- -3
- -2
- -1
- 1
- 2
- 3
- 4
Show 1 moreShow less
- 0
- Electron configuration
- 1s² 2s² 2p²
1
Sources- 1.terpconnect.umd.edu/~wbreslyn/chemistry/electron-configurations/configurationCarbon.htmlRetrieved 2026-02-26
- [He] 2s² 2p²
1
Sources- 1.terpconnect.umd.edu/~wbreslyn/chemistry/electron-configurations/configurationCarbon.htmlRetrieved 2026-02-26
- 1s² 2s² 2p²
- Ionic radius
- 0.15 ångström charge number: 4 · coordination number: 4
- 0.16 ångström atomic number: 4 · coordination number: 6
- Standard enthalpy of formation
- 716.68 kilojoule per mole state of matter: gas
- Standard molar entropy
- 158.1 joule per mole kelvin state of matter: gas
- Ionization energy
- 11.2603 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 24.3831 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 47.8878 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 11.2603 eV
- Atomic radius
- 67 picometre
- 70 picometre
- Covalent radius
- 76 picometre
- 73 picometre
- Van der Waals radius
- 170 picometre
On other databases
93 identifiers linking carbon across the web's reference databases
- Arabic Ontology lexical concept ID151078442
- Art & Architecture Thesaurus ID300264720
- Australian Educational Vocabulary IDscot/3180
- BabelNet ID00006890n
- BBC Things IDd589c4b4-595e-4917-b110-45e2bf430ae9
- Bibliothèque nationale de France ID11976417k
- BNCF Thesaurus ID18855
- Brockhaus Enzyklopädie online IDkohlenstoff
- CAS Registry Number7440-44-0
- ChEBI ID33415
- ChemSpider ID4575370
- COD ID2300702
- CosIng number95647
- Cultureel Woordenboek IDnatuurkunde-scheikunde-en-sterrenkunde/koolstof
- De Agostini IDcarbònio
- Dewey Decimal Classification547
- DrugBank IDDB09278
- DSSTOX compound identifierDTXCID407391
- DSSTox substance IDDTXSID9027651
- EC number231-153-3
- ECHA Substance Infocard ID100.028.321
- Encyclopædia Britannica Online IDscience/carbon-chemical-element
- Encyclopædia Universalis IDcarbone
- Encyclopedia of China (Third Edition) ID (2026)1xd2db
- Encyclopedia of China (Third Edition) old ID (2021)261106
- EuroVoc ID5261
- Freebase ID/m/025tfgm
- Gmelin number8868
- GND ID4164538-8
- Gran Enciclopèdia Catalana IDcarboni
- Gran Enciclopèdia Catalana ID (former scheme)0088553
- Great Norwegian Encyclopedia IDkarbon
- Great Russian Encyclopedia portal IDuglerod-dc7cd3
- Hrvatska enciklopedija IDugljik
- ICSC ID0702
- InChIInChI=1S/C
- InChIKeyOKTJSMMVPCPJKN-UHFFFAOYSA-N
- Interlingual Index IDi113913
- IUPAC Gold Book IDC00821
- J9U entity ID987007283488605171
- JSTOR topic ID (archived)carbon
- KBpedia IDCarbon
- KEGG IDC06265
- Klexikon article IDKohlenstoff
- Krugosvet article (archived)nauka_i_tehnika/himiya/UGLEROD.html
- Larousse IDdivers/carbone/30774
- Latvian National Encyclopedia Online ID113504
- Lex IDcarbon
- Library of Congress Authorities IDsh85020090
- MeSH descriptor IDD002244
- MeSH tree codeD01.268.150
- Microsoft Academic ID (discontinued)501529594
- Museum-digital tag ID2399
- Namuwiki ID탄소
- National Library of Latvia ID000084767
- National Library of Poland MMS ID9810554427305606
- National Library of Spain SpMaBN IDXX526055
- NDL Authority ID00572686
- NE.se IDkol
- NicoNicoPedia word article ID炭素
- NL CR AUT IDph158523
- NLab IDcarbon
- OmegaWiki Defined Meaning484
- Online PWN Encyclopedia ID3995100
- Open Library subject IDcarbon
- OpenAlex IDC2993252241
- Pixiv Encyclopedia ID炭素
- Probes And Drugs IDPD143905
- ProofWiki IDDefinition:Carbon
- PSH ID5796
- PubChem CID5462310
- Quora topic IDCarbon-element-1
- RationalWiki IDCarbon
- Römpp online IDRD-11-01491
- ScienceDirect topic IDchemical-engineering/carbon
- Spanish Cultural Heritage thesauri IDmaterias/1106726
- SureChEMBL ID1420401
- SVKKL authority IDh0004569-uhlik
- Treccani IDcarbonio
- U.S. National Archives Identifier10638575
- UK Archival Thesaurus IDf2/mt225/4347/728
- UK Parliament thesaurus ID8964
- UNESCO Thesaurus IDconcept4645
- UniChem compound ID1102339
- UNII4XYU5U00C4
- USGS Thesaurus ID1420
- Vikidia article IDen:Carbon
- WikiKids IDKoolstof
- Wolfram Language entity codeEntity["Element", "Carbon"]
- WordNet 3.1 Synset ID14657384-n