Question

What is the bond order of $O-O$ bond in $O_3$?

• A. 1
• B. 1.33
• C. 1.5
• D. 2.5

Answer 1

The correct option is C 1.5


$\text{Bond order}=\frac{\text{Number of bonds in all possible sides}}{\text{Number of resonating structures}}$
$\text{Bond order}=\frac{3}{2}=1.5$