noble gases
group of chemical elements in column 18 of the periodic table, that tend to be chemically inert and thus form odorless, colorless, monatomic gases with low reactivity; consists of helium, neon, argon, krypton, xenon, radon, and possibly oganesson
Pronunciations
British English
/ˈnəʊbəl ˈɡæsɪz/Open converterAmerican English
/ˈnoʊbəl ˈɡæsɪz/Open converter
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