Back نظائر الكربون Arabic Isótopos del carbonu AST কার্বনের সমস্থানিক Bengali/Bangla Isòtops del carboni Catalan Izotopy uhlíku Czech Кăмрăкамăш изотопĕсем CV Ισότοπα του άνθρακα Greek Izotopoj de karbono Esperanto Anexo:Isótopos de carbono Spanish ایزوتوپهای کربن Persian
 | This article needs additional citations for verification. (May 2018) |
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| Standard atomic weight Ar°(C) | |||||||||||||||||||||||||||||||
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Carbon (6C) has 14 known isotopes, from 8
C to 20
C as well as 22
C, of which only 12
C and 13
C are stable. The longest-lived radioisotope is 14
C, with a half-life of 5.70(3)×103 years. This is also the only carbon radioisotope found in nature, as trace quantities are formed cosmogenically by the reaction 14
N + n → 14
C + 1
H. The most stable artificial radioisotope is 11
C, which has a half-life of 20.3402(53) min. All other radioisotopes have half-lives under 20 seconds, most less than 200 milliseconds. The least stable isotope is 8
C, with a half-life of 3.5(1.4)×10−21 s. Light isotopes tend to decay into isotopes of boron and heavy ones tend to decay into isotopes of nitrogen.
- ^ "Standard Atomic Weights: Carbon". CIAAW. 2009.
- ^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.
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