Question

State two examples of compounds in which halogens exhibit higher oxidation state.

Answer 1

Halogens generally exhibit a –1 oxidation state, but they can show higher positive oxidation states of +1, +3, +5, and +7 when bonded with more electronegative elements like oxygen or fluorine.

Example:

Chlorine in perchloric acid (HClO₄) → oxidation state of Cl = +7

Iodine in periodate ion \[\ce{(IO^-_4)}\] → oxidation state of I = +7