RAJASTHAN PMT Rajasthan - PMT Solved Paper-2002

  • question_answer
    Co-ordinate bond is absent in:

    A)  \[B{{H}_{4}}^{\bigcirc -}\]                           

    B)  \[C{{O}_{3}}^{-2}\]        

    C)         \[{{H}_{3}}{{O}^{+}}\]                  

    D)         \[N{{H}_{4}}^{\oplus }\]

    Correct Answer: B

    Solution :

    \[CO_{3}^{-2}ion,\] \[\left[ {{O}^{-}}-\overset{{{O}^{-}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=O \right]\]does not contain any co-ordinate bond.


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