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MGIMS WARDHA MGIMS WARDHA Solved Paper-2015

  • question_answer
    If the positions of\[N{{a}^{+}}\]and\[C{{l}^{-}}\]are interchanged in\[NaCl,\], the crystal lattice with respect to\[N{{a}^{+}}\]and\[C{{l}^{-}}\]is

    A)  bcc and fcc        

    B)  fcc and bcc

    C)  Both fee            

    D)  Both bcc

    Correct Answer: C

    Solution :

                    Each\[N{{a}^{+}}\]in\[NaCl\]is surrounded by six\[C{{l}^{-}}\]and each\[C{{l}^{-}}\]in\[NaCl\]is surrounded by six \[N{{a}^{+}}\] and, thus on interchanging\[C{{l}^{-}}\]the fee structure of\[NaCl\]will not change.


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