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Defenition of the word atomic number 18

    • Defenition of the word atomic number 18

      • a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
      • a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth''s atmosphere

    Synonyms for the word atomic number 18

      • Ar
      • argon

    Hypernyms for the word atomic number 18

      • argonon
      • chemical element
      • element
      • inert gas
      • noble gas

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