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JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Self Evaluation Test - The s-Block Elements

  • question_answer
    In the case of alkali metals, the covalent character decreases in the order:

    A) \[MF>MCl>MBr>MI\]

    B) \[MF>MCl>MI>MBr\]

    C) \[MI>MBr>MCl>MF\]

    D) \[MCl>MI>MBr>MF\]

    Correct Answer: C

    Solution :

    [c] As the size of halide ion decreases, x\[{{I}^{-}}>B{{r}^{-}}>C{{l}^{-}}>{{F}^{-}},\]tendency to get polarised by cation \[{{M}^{+}}\] decreases and hence covalent character decreases.


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