Related / Similar Words: noble gas, inert gas Definition: Hyponyms: argon, Ar, atomic number 18, helium, He, atomic number 2, krypton, Kr, atomic number 36, neon, Ne, atomic number 10, radon, Rn, atomic number 86, xenon, Xe, atomic number 54 Anagrams: organon, Rangoon, Gongora
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