Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The correct order of C–O bond length among CO, CO 32– and CO 2 is :
Text Solution
Verified by ExpertsThe correct answer is:
D
A bond length is the average distance between the centres of nuclei of two bonded atoms. A multiple bond (double or triple bond) always shorter than the corresponding single bond.
The C-atom in CO 32– is sp 2 -hybridised as shown
The C-atom in CO 2 is sp-hybridised with bond distance carbon oxygen is 122 pm.
O=C=O 
+ O ≡ C – 
–C + ≡ O
The C-atom in CO is sp-hybridised with C–O bond distance is 110 pm.
So, the correct order is
CO < CO 2 < CO 32–
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