JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Self Evaluation Test - The p-Block Elements (Group 13 and Group 14)

  • question_answer
    Which of the following has the minimum heat of dissociation:

    A) \[{{\left( C{{H}_{3}} \right)}_{3}}N:\to B{{F}_{3}}\]

    B) \[{{(C{{H}_{3}})}_{3}}N:\to B{{(C{{H}_{3}})}_{2}}F\]

    C) \[{{(C{{H}_{3}})}_{3}}N:\to B{{(C{{H}_{3}})}_{3}}\]

    D) \[{{\left( C{{H}_{3}} \right)}_{3}}N:\to \text{ }B\left( C{{H}_{3}} \right){{F}_{2}}\]

    Correct Answer: C

    Solution :

    [c] Due to +I effect of methyl groups the Lewis character of \[B{{(C{{H}_{3}})}_{3}}\] decreases and coordination becomes weaker.


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