Question

What is the correct order of increasing $C-O$ bond lengths of $CO,CO_{3}^{- 2}$ and $CO_{2}$ ?

• A. $CO_{3}^{- 2} < CO_{2} < CO$
• B. $CO_{2} < CO_{3}^{- 2} < CO$
• C. $CO < CO_{3}^{- 2} < CO_{2}$
• D. $CO < CO_{2} < CO_{3}^{- 2}$

Answer 1

Answer: (D)

$CO_{3}^{- 2}>CO_{2}>CO$
$COCO_{2}CO_{3}^{- 2}$
Bond order $321.33$
The least bond length shows the greatest bond strength.
Higher the bond order, the smaller is the bond length.