JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2014

  • 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 corners \[\text{MgS}{{\text{O}}_{\text{4}}}\] Contribution of 6 face centred atoms \[CaC{{l}_{2}}\] \[A\to B,B\to C\] Total number of atoms per unit cell \[C\to A\]           


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