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Which halogen oxidises water to liberate...

Which halogen oxidises water to liberate oxygen exothermally?

A

Fluorine

B

Chlorine

C

Bromine

D

Iodine

Text Solution

Verified by Experts

The correct Answer is:
A
Fluorine decomposes water very vigorously even at low temperature and in dark forming mixture of `O_2` and `O_3` (ozonised oxygen).
`2H_2O + 2F_2 to 4HF + O_2`
`3H_2O + 3F_2 to 6HF +O_3`
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