JEE Main & Advanced Sample Paper JEE Main Sample Paper-26

  • question_answer
    In a face centered lattice of X and Y, X atoms are present at the comers while Y atoms are at face centers. Then the formula of the compound is:

    A)  \[X{{Y}_{3}}\]                                    

    B)  \[{{X}_{2}}{{Y}_{3}}\]  

    C)  \[{{X}_{3}}Y\]                        

    D)  \[XY\]

    Correct Answer: A

    Solution :

    for \[X,\,8\times \frac{1}{8}\,=1\]            For \[Y,\,6\times \frac{1}{2}=3\] So \[A{{B}_{3}}\]

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