Carbon

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Carbon (from "coal") is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. There are three naturally occurring isotopes, with ¹²C and ¹³C being stable, while ¹⁴C is radioactive, decaying with a half-life of about 5,730 years. Carbon is one of the few elements known since antiquity.

• See also: Wikipedia

• Related: Carbon chauvinism, Carbon footprint, Low-carbon economy, Timeline of carbon nanotubes

Carbon on Britannica Carbon on Britannica www.britannica.com/eb/article-80956/carbon-group-element - Web

Extensive Carbon page at asu.edu Extensive Carbon page at asu.edu invsee.asu.edu/nmodules/Carbonmod/everywhere.html - Web

Electrochemical uses of carbon Electrochemical uses of carbon electrochem.cwru.edu/ed/encycl/art-c01-carbon.htm - Web

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Carbon – Super Stuff. Animation with sound an... Carbon – Super Stuff. Animation with sound and interactive 3D-models. www.forskning.no/Artikler/2006/juni/1149432180.36 - Web

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