Question

    Which of the following is NOT classified as a Noble gas?

    A Helium Correct Answer Incorrect Answer
    B Neon Correct Answer Incorrect Answer
    C Argon Correct Answer Incorrect Answer
    D Hydrogen Correct Answer Incorrect Answer

    Solution

    Hydrogen, unlike Helium, Neon, and Argon, is not a Noble gas. Noble gases are characterized by their extremely low chemical reactivity and are found in Group 18 of the periodic table.

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