Chemical Bonding MCQs The correct order of C-O bond length among CO, CO2−3, CO2 is April 11, 2022 Q. The correct order of C-O bond length among CO, CO2−3, CO2 is CO2 < CO2−3< COCO = CO2 < CO2−3CO2−3< CO2 < COCO < CO2 < CO2−3 Answer: CO < CO2 < CO2−3