RAJASTHAN PMT Rajasthan - PMT Solved Paper-2003

  • question_answer
    Which of the following species, is planar?

    A)  \[CO_{3}^{2-}\]        

    B)  \[N{{H}_{3}}\]

    C)  \[PC{{l}_{3}}\]      

    D)  None of these

    Correct Answer: A

    Solution :

    In  \[CO_{3}^{2-}\]  ion, carbon undergoes \[s{{p}^{2}}\]-hybridisation, hence it has trigonal planar geometry, i.e.


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