# What is the oxidation number of chlorine in KClO_3 and Cl_2O?

In $\text{potassium chlorate}$ we have $C l \left({V}^{+}\right)$.........
And in $C {l}_{2} O$ we have $C l \left(I +\right)$
For chlorate anion, $C l {O}_{3}$, $C {l}^{\text{ON}} = - 1 - 3 \times - 2 = + V$