JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Self Evaluation Test - The p-Block Elements (Group 15, 16, 17 & 18)

  • question_answer
    Which one of the following does not have a pyramidal shape?

    A) \[{{(C{{H}_{3}})}_{3}}N\]                  

    B) \[{{(Si{{H}_{3}})}_{3}}N\]

    C) \[P{{\left( C{{H}_{3}} \right)}_{3}}\]         

    D) \[P{{\left( Si{{H}_{3}} \right)}_{3}}\]

    Correct Answer: B

    Solution :

    [b] In case of \[N{{(Si{{H}_{^{3}}})}_{3}},\] N atom is \[s{{p}^{2}}\] hybridised, the lone pair is present in 2p orbital and it is transferred to empty d orbital of Si forming \[d\pi -p\pi \] bond. Hence nitrogen with \[s{{p}^{2}}\] hybridization has trigonal planar shape.


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