Question

Which halogen oxidises water to liberate oxygen exothermically?

Answer 1

fluorin oxidises water to liberate oxygen

Answer 2

Answer:

Fluorine (atm. no. 9, 1st halogen in the halogen series.)

Explanation:

Fluorine reacts with water even at very low temperatures and oxidizes it to form oxygen.

$4F+ 2H_{2}O = 4FH + O_{2}$

This is because it has high electronegativity.