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NEET Sample Paper NEET Sample Test Paper-3

  • question_answer
    Which of the following are isoelectronic and isostructural? \[NO_{3}^{-},CO_{3}^{2-},ClO_{3}^{-},S{{O}_{3}}\]

    A)  \[NO_{3}^{-},CO_{3}^{2-}\]    

    B)  \[S{{O}_{3}},NO_{3}^{-}\]

    C)  \[ClO_{3}^{-},CO_{3}^{2-}\]                

    D)  \[CO_{3}^{2-},S{{O}_{3}}\]

    Correct Answer: A

    Solution :

        Number of electron in \[NO_{3}^{-}=7+24+1=32\] Number of electron in \[CO_{3}^{2-}=6+24+2=32\] Hence, they are isoelectronic Total number of valence \[{{e}^{-}}\] in \[NO_{3}^{-}\]                 \[=5+6\times 3+1=24\] Total number of valence \[{{e}^{-}}\] in \[CO_{3}^{2-}\]                 \[=4+6\times 3+2=24\] Now \[24\div 8=3({{Q}_{1}})+0({{R}_{1}})\] Hence, Hybridisation of central atom in both cases is \[s{{p}^{2}}\]. Hence they are isostructural also.               


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