释义 |
atomic number 86 ThesaurusNoun | 1. atomic number 86 - a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to healthradon, Rnchemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matterargonon, inert gas, noble gas - any of the chemically inert gaseous elements of the helium group in the periodic table |
atomic number 86 Related to atomic number 86: mass numberSynonyms for atomic number 86noun a radioactive gaseous element formed by the disintegration of radiumSynonymsRelated Words- chemical element
- element
- argonon
- inert gas
- noble gas
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