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J & K CET Engineering J and K - CET Engineering Solved Paper-2012

  • question_answer
    Total number of metal atoms per unit cell in a face-centred cubic lattice is

    A)  14              

    B)  8

    C)  6               

    D)  4

    Correct Answer: D

    Solution :

     In a fee lattice, Contribution of 8 atoms at comers\[=8\times \frac{1}{8}=1\] Contribution of 6 face centred atoms \[=6\times \frac{1}{2}=3\] \[\therefore \]Total number of atoms per unit cell \[=1+3=4\]


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