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VIT Engineering VIT Engineering Solved Paper-2014

  • question_answer
    The bond angles of \[\text{N}{{\text{H}}_{\text{3}}}\text{,NH}_{\text{4}}^{\text{+}}\] and \[\text{NH}_{\text{2}}^{\text{-}}\] are in the order

    A)  \[NH_{2}^{-}>N{{H}_{3}}>NH_{4}^{+}\]

    B) \[NH_{4}^{+}>N{{H}_{3}}>NH_{2}^{-}\]

    C) \[N{{H}_{3}}>NH_{2}^{-}>NH_{4}^{+}\]

    D) \[NH>NH_{4}^{+}>NH_{2}^{-}\]

    Correct Answer: B

    Solution :

    As the number of lone pairs of electrons increases, bond angle decreases. Thus, the order of bond angle is               \[R=0.2\times {{10}^{3}}\Omega \]


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