JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties Question Bank Valency and oxidation state

  • question_answer Which of the following gas does not have an octet or eight electrons in the outer shell [CBSE PMT 2001]

    A) Ne

    B) Ar

    C) Rn

    D) He

    Correct Answer: D

    Solution :

    \[He\] has the atomic number 2 so it does not have octet.

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