Which of the following is a radical?

O

H20

OH

H

The correct option is C) OH

Explanation:

In the field of chemistry, radicals can be described as atoms, molecules or ions which have at least one unpaired electron.

The formation of a radical occurs when a single covalent bond breaks so that each of the atoms that had been involved in the formation of the covalent bond can have an unpaired electron. Examples of radicals include OH, NH4 + etc.

Other option, like option B, is not true because a molecule of water does not have any unpaired electrons in its valence shell.