Question

$O_3$ is diamagnetic molecule. If it has all $O-O$ bond lengths equal then enter 1, else enter 0.

Answer 1

In case of $O_3$, due to the resonance, two $O-O$ bonds are equivalent and have bond order of $1.5$ (bond length = 128 pm, angle = ${116.5}^{\circ }$). All electrons appear paired hence, is diamagnetic.

Therefore, the statement is true.