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

  • question_answer The valency shell of calcium contains  [JIPMER 2000]

    A) 8 electrons

    B) 6 electrons

    C) 4 electrons

    D) 2 electrons

    Correct Answer: D

    Solution :

    Valence shell configuration for IIA group elements is : \[n{{s}^{2}}\]

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