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JEE Main & Advanced Chemistry Chemical Bonding and Molecular Structure / रासायनिक आबंधन एवं आणविक संरचना Question Bank Covalent bonding

  • question_answer
    Among the species : \[C{{O}_{2}},C{{H}_{3}}CO{{O}^{-}},\] \[CO,C{{O}_{3}}^{2-},\] HCHO which has the weakest carbon- oxygen bond [Kerala PMT 2004]

    A)                 \[C{{O}_{2}}\]   

    B)                 \[C{{H}_{3}}CO{{O}^{-}}\]

    C)                 CO         

    D)                 \[C{{O}_{3}}^{2-}\]

    E)                 HCHO

    Correct Answer: D

    Solution :

                    Among the given species. The bond dissociation energy of \[C-O\] bond is minimum in case of \[CO_{3}^{2-}\] by which \[C-O\]bond become more weaker in \[CO_{3}^{2-}\] or the bond order of \[CO_{3}^{2-}\](1.33) is minimum so the bond become weaker.


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