Question

what is radicals?give answer in points ​

Answer 1

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➡A radical is a chemical species that contains an unpaired electron. In the past such species were often called "free radicals"

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Answer 2

A radical is a chemical species that contains an unpaired electron. In the past such species were often called "free radicals". Radicals are usually formed when a single covalent bond breaks to leave an unpaired electron on each of the two species created by the bond breaking: this is called homolysis.

Example: A notable example of a radical is the hydroxyl radical (HO•), a molecule that has one unpaired electron on the oxygen atom. Two other examples are triplet oxygen and triplet carbene (:CH. 2) which have two unpaired electrons.