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MGIMS WARDHA MGIMS WARDHA Solved Paper-2013

  • question_answer
    A mineral having the formula\[A{{B}_{2}}\]crystallizes in the cubic close-packed lattice, with the A atoms occupying the lattice points. The fraction of the tetrahedral sites occupied by B atoms is

    A)  20%                      

    B)  40%   

    C)  60%                      

    D)  100%

    Correct Answer: D

    Solution :

                    Let the number of A atoms = 1 there are 2 tetrahedral voids for 1 atom of A and atoms B occupy all the tetrahedral voids. Therefore, tetrahedral sites occupied by atoms B=100%.


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