On reaction with stronger oxidizing agent like KIO _ 4 , hydrogen...

Hydrogen peroxide acts as an oxidising as well as reducing agent in both acidic and alkaline media.

But its reducing action is more effective in alkaline medium

${KIO}_{4}^{} + {H}_{2}{O}_{2} \to {KIO}_{3}^{} + {O}_{2} + {H}_{2}O$

The oxidation number of iodine in ${IO}_{3}^{-}$ is +5

The geometry of iodine containing compound changes from tetrahedral to pyramidal in the above reaction