JCECE Medical JCECE Medical Solved Paper-2015

  • question_answer
    The order of acidic strength of boron dihalides is

    A)  \[B{{F}_{3}}<BC{{l}_{3}}<BB{{r}_{3}}<B{{l}_{3}}\]

    B)  \[B{{l}_{3}}<BB{{r}_{3}}<BC{{l}_{3}}<B{{F}_{3}}\]

    C)  \[BC{{l}_{3}}<BB{{r}_{3}}<B{{l}_{3}}<B{{F}_{3}}\]

    D)  \[BB{{r}_{3}}<BC{{l}_{3}}<B{{F}_{3}}<B{{l}_{3}}\]

    Correct Answer: A

    Solution :

     Boron trihalides are Lewis acid. The order of their acidic strength is as \[B{{F}_{3}}<BC{{l}_{3}}<BB{{r}_{3}}<B{{I}_{3}}\]


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