Determine the correct increasing order of the bond length among carbon monoxide (), carbon dioxide ( — Chemical Bonding Chemistry Question
Question
Determine the correct increasing order of the $C-O$ bond length among carbon monoxide ($CO$), carbon dioxide ($CO_2$), and the carbonate ion ($CO_3^{2-}$).
Answer: A
💡 Solution & Explanation
Bond length is inversely proportional to bond order. The bond order of $CO$ is 3, $CO_2$ is 2, and $CO_3^{2-}$ is 1.33 (resonance of 4 bonds over 3 oxygens). Thus, the bond length order is $CO < CO_2 < CO_3^{2-}$.
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