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MGIMS WARDHA MGIMS WARDHA Solved Paper-2012

  • question_answer
    If two elements X and Y have 3 and 6 electrons in its outermost shell, then the molecular formula of compound formed by the combination of X and Y

    A)  \[XY\]                                  

    B)  \[{{X}_{3}}Y\]

    C)  \[{{X}_{2}}Y\]                                   

    D)  \[{{X}_{2}}{{Y}_{3}}\]

    Correct Answer: D

    Solution :

                    X has 3 electrons so it forms\[{{X}^{3+}}\]ion while Y has 6 electron in its outermost shell therefore it forms\[{{Y}^{2-}}\]ion. \[{{X}^{3+}}+{{Y}^{2-}}\xrightarrow[{}]{{}}{{X}_{2}}{{Y}_{3}}\]


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