# Order of C-O bond length [duplicate]

Find the correct order of increasing $\ce{C-O}$ bond length in $\ce{CO}$, $\ce{CO2}$, $\ce{CO3^2-}$.

My solution: as bond length is inversely proportional to the bond order, the order would be $\ce{CO} < \ce{CO2} < \ce{CO3^2-}$. Am I correct?