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NEET Sample Paper NEET Sample Test Paper-39

  • question_answer
    The number of carbon atoms per unit cell of diamond unit cell is

    A)  8           

    B)  6

    C)  1           

    D)  4

    Correct Answer: A

    Solution :

      Diamond has ZnS type structure \[\therefore \]Number of C atoms \[=\underset{Corners}{\mathop{8\times \frac{1}{8}}}\,\,+\underset{fcc}{\mathop{6\times \frac{1}{2}\,}}\,+\underset{(tetrahedral\,voids)}{\mathop{4}}\,\] = 8


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