Among the species:${\rm{C}}{{\rm{O}}_2},{\rm{C}}{{\rm{H}}_3}{\rm{CO}}{{\rm{O}}^ - },{\rm{CO}},{\rm{CO}}_3^{2 - }$,$HCHO$ which has the weakest ${\rm{C}} - {\rm{O}}$ bond?

${\rm{C}}{{\rm{H}}_3}{\rm{CO}}{{\rm{O}}^ - }$

JEE CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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Analyzing +4 | -1

Among the species:

\mathrm{C}{\mathrm{O}_2},\mathrm{C}{\mathrm{H}_3}\mathrm{CO}{\mathrm{O}^ - },\mathrm{CO},\mathrm{CO}_3^{2 - }

HCHO

which has the weakest

\mathrm{C} - \mathrm{O}

bond?

View answer and explanation

Correct option: C

\mathrm{CO}_3^{2 - }

The correct answer is C (

\mathrm{CO}_3^{2 - }

) because it has the lowest bond order (1.33) among the given species, resulting in the weakest

\mathrm{C} - \mathrm{O}

bond.