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  5. The Solid State / ठोस प्रावस्था

12th Class Chemistry The Solid State / ठोस प्रावस्था Question Bank MCQs - The Solid State

  • question_answer
    A compound is formed by two elements Y and Z. The element Z forms ccp and atoms Y occupy 1/3rd of tetrahedral voids. The formula of the compound is

    A) \[{{Y}_{2}}{{Z}_{3}}\]

    B) YZ

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

    D) \[{{Y}_{2}}Z\]

    Correct Answer: A

    Solution :

    Suppose no. of atoms of Z = a No. of tetrahedral voids\[=2a\] No. of atoms of \[Y=\frac{1}{3}\times 2a=\frac{2a}{3}\] Ratio of atoms of Y and Z \[=\frac{2a}{3}:a=2:3\] Hence, the formula of the compound \[={{Y}_{2}}{{Z}_{3}}\]


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