Submitted by György Chityil ... on Fri, 01/19/2018 - 20:25 Hierarchy: NounDescription: {{isotope}} The normal isotope of helium, {{nuclide|4|2|He}}, that has two neutronsNgram: helium-4Ngram Text: helium-4Source: WiktionaryIssue: 0Wiktionary tag: isotopenuclide42heNgram Count: 1