12th Class Chemistry The Solid State / ठोस प्रावस्था Question Bank Case Based (MCQs) - The Solid State

  • question_answer
    Assertion: The packing efficiency is maximum for the fcc structure.
    Reason: The coordination number is 12 in fcc structures.

    A) Assertion and reason both are correct statements and reason is correct explanation for assertion.

    B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.

    C) Assertion is correct statement but reason is wrong statement.

    D) Assertion is wrong statement but reason is correct statement.

    Correct Answer: B

    Solution :

    The no. of atoms in fcc structure is 4 per unit cell which provides a maximum efficiency as 74%.


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