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Question: The correct order of increasing C – O bond length in CO, \(\mathrm { CO } _ { 3 } ^ { 2 - }\), CO<su...

The correct order of increasing C – O bond length in CO, CO32−\mathrm { CO } _ { 3 } ^ { 2 - }, CO2 is –

A

CO32−\mathrm { CO } _ { 3 } ^ { 2 - }< CO2< CO

B

CO2< CO32−\mathrm { CO } _ { 3 } ^ { 2 - } < CO

C

CO < CO32−\mathrm { CO } _ { 3 } ^ { 2 - } < CO2

D

CO < CO2< CO32−\mathrm { CO } _ { 3 } ^ { 2 - }

Answer

CO < CO2< CO32−\mathrm { CO } _ { 3 } ^ { 2 - }

Explanation

Solution

C ŗ O has lowest bond length due to highest bond order.

O = C = O has second lowest bond length due to doubled bond.

has highest bond length due to lowest bond order which is due to resonance.