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JEE Main & Advanced JEE Main Paper (Held On 12 May 2012)

  • question_answer
    The formation of molecular complex \[B{{F}_{3}}-N{{H}_{3}}\]results in a change in hybridization of boron     JEE Main Online Paper (Held On 12 May 2012)

    A) from sp2 to dsp2              

    B)                        from sp2 to sp3

    C)                        from sp3 to sp2                 

    D)                        from sp3 to sp3

    Correct Answer: B

    Solution :

                    In  \[B{{F}_{3}},B\]is \[s{{p}^{2}}\]hybridized with one empty \[{{p}_{z}}\] orbital. The empty \[{{p}_{z}}\] orbital of \[B{{F}_{3}}\]can be filled by lone pair of molecules such as \[N{{H}_{3}}\]. When this occurs a tetrahedral molecule or ion is formed which is sp3 hybridized.


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