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DUMET Medical DUMET Medical Solved Paper-2009

  • question_answer
    A compound contains two types of atoms X and Y. It crystallizes in a cubic lattice with atoms X at the comers of the unit cell and atoms Y at the body centres. The simplest possible formula of this compound is

    A)  \[{{X}_{3}}Y\]            

    B)  \[{{X}_{2}}Y\]

    C)  \[XY\]             

    D)  \[X{{Y}_{8}}\]

    Correct Answer: C

    Solution :

    For comers of the unit cell, total number of X atoms \[=8\times \frac{1}{8}=1\] For body centre of the unit cell, total number of Y atoms = 1 Therefore, formula of the compound = XY


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