Carbon (IPA: ) is a chemical element that has the symbol C and atomic number 6. An abundant nonmetallic, tetravalent element, carbon has several allotropic forms.
Fullerene Graphite Diamond Coal Amorphous carbon Carbon black Carbon dioxide Glassy carbon Lonsdaleite Charcoal Aggregated diamond nanorods Carbon-12 Allotropy Organic compound Abrasive Soot Carbon nanotube Normal conditions Covalent bond Cellulose Carbon fiber Carbyne Hydrocarbon Specific strength Isotope Carbon nanobud Carbon nanofoam Plastic Journal of Chemical Physics Life Hexagonal crystal system Castor oil plant Carbon-13 CNO cycle Abundance of the chemical elements Limestone Cubic crystal system Tungsten carbide Petroleum Carbon disulfide