Question

    Which of the following is NOT an example of 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

    Noble gases belong to Group 18 of the periodic table and include helium, neon, argon, krypton, xenon, and radon. They are chemically inert, colorless, and odorless gases. Hydrogen, although a gas, is not a noble gas. 

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