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JEE Main & Advanced Chemistry The Solid State / ठोस प्रावस्था Sample Paper Topic Test - Solid State

  • question_answer
    A compound formed by elements A and B has a cubic structure in which A atoms are at the comers of the cube and B atoms are at the face centres. The formula for the compound is

    A) \[{{A}_{2}}{{B}_{3}}\]

    B) \[A{{B}_{3}}\]

    C) \[{{A}_{3}}B\]

    D) \[{{A}_{3}}{{B}_{2}}\]

    Correct Answer: B

    Solution :

    [b] Number of corner atom \[(A)=8\times \frac{1}{8}=1\]
    Number of face centre atom \[(B)=6\times \frac{1}{2}=3\]
    Hence, formula of the compound is \[A{{B}_{3}}\].


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