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12th Class Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank MCQs - Haloalkanes and Haloarenes

  • question_answer
    The order of reactivity of various alkyl halides towards nucleophilic substitution follows the order

    A) \[R-I>R-Br>R-Cl>R-F\]

    B) \[R-F>R-Cl>R-Br>R-I\]

    C) \[R-Cl>R-Br>R-I>R-F\]

    D) \[R-Br>R-I>R-Cl>R-F\]

    Correct Answer: A

    Solution :

    The alkyl halides are very reactive due to highly polarised C-X bond with a large difference in electro negativities of carbon and halogen atoms. The order of reactivity is iodides > bromides > chlorides > fluorides.


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