\\\\(\\overset{+1}{K}Cl\\overset{-2}{O}\\\\)oxidation state of alrali metals = +1oxygen = -2Let oxidation state of chlorine is x.\\\\(\ herefore\\\\) x+1+(-2) = 0\\\\(\ herefore\\\\) x = +1 Thus, oxidation state of chlorine in potassium chlorate is +1.