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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
    The factor responsible for weak acidic nature of B-F bonds in \[B{{F}_{3}}\] is 

    A) large electronegativity of fluorine

    B) three centred two electron bonds in \[B{{F}_{3}}\]

    C) \[p\pi -d\pi \] back bonding

    D) \[p\pi -p\pi \] back bonding

    Correct Answer: D

    Solution :

    [d] It is \[p\pi -p\pi \] back bonding involving B and F. The smaller atoms show more back bonding.


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