Submitted by György Chityil ... on Fri, 01/19/2018 - 20:57 Hierarchy: NounDescription: {{isotope}} the least abundant of the two stable isotopes of carbon, {{nuclide|13|6|C}}, having six protons and seven neutronsNgram: carbon-13Ngram Text: carbon-13Source: WiktionaryIssue: 0Wiktionary tag: isotopenuclide136CNgram Count: 1