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J & K CET Medical J & K - CET Medical Solved Paper-2015

  • question_answer
    The number of tetrahedral and octahedral void per unit cell of cubic closed packed structure is

    A)  4, 8     

    B)  4, 4     

    C)  8, 4     

    D)  8, 8

    Correct Answer: C

    Solution :

     In ccp or fee structure Number of lattice points (Z) = 4 \[\because \]Number of octahedral voids = Number of lattice points \[\therefore \]Number of octahedral voids = 4 and Number of tetrahedral voids \[=2\times \] Number of octahedral voids \[\therefore \]number of tetrahedral voids\[=2\times 4=8\]


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