Carbon

:Alternative meaning: Carbon (API)

Isotopes

Carbon has two stable, naturally-occurring isotopes: carbon-12, or 12C, (98.89%) and carbon-13, or 13C, (1.11%), and one unstable, naturally-occurring, radioisotope; carbon-14 or 14C. There are 15 known isotopes of carbon and the shortest-lived of these is 8C which decays through proton emission and alpha decay. It has a half-life of 1.98739x10-21 s.

Related Topics:
Isotope - Carbon-12 - Carbon-13 - Radioisotope - Carbon-14 - Proton emission - Alpha decay - S

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In 1961 the International Union of Pure and Applied Chemistry adopted the isotope carbon-12 as the basis for atomic weights.

Related Topics:
1961 - International Union of Pure and Applied Chemistry - Carbon-12 - Atomic weight

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Carbon-14 has a half-life of 5700 y and has been used extensively for radiocarbon dating wood, archaeological sites and specimens.

Related Topics:
Half-life - Y - Radiocarbon dating - Archaeological

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