The carbon-oxygen bond in CO has a higher bond dissociation enthalpy than a carbon-oxygen bond in CO2. Which is the best explanation for this difference? | Bonding

Question

The carbon-oxygen bond in CO has a higher bond dissociation enthalpy than a carbon-oxygen bond in CO₂. Which is the best explanation for this difference?

CO has a bond order of 3 while each carbon-oxygen bond in CO₂ has a bond order of 2.

✓ Correct

CO is a polar molecule while CO₂ is a nonpolar molecule.

CO contains one carbon-oxygen bond while CO₂ contains two carbon-oxygen bonds.

CO has a lone pair on carbon while CO₂ does not.

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