Question

Ozonolysis of $ClO_2$ produces oxide of chlorine. The average oxidation state of chlorine in this oxide is ____.

Answer 1

ClO2 contains an odd electron and is paramagnetic. It reacts with ozone to give O2 and Cl2O6.
2ClO2 + 2O3 → Cl2O6 + 2O2
In Cl2O6, the average oxidation state of Cl is +6.