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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
The noble gases are the naturally occurring members of group 18 of the periodic table: helium, neon, argon, krypton, xenon, and radon. Wikipedia