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Atoms or molecules having orbitals containing a single unpaired electron is known as ___________

(a) Captions

(b) Anions

(c) Free radicals

(d) Carbocation

I got this question by my college professor while I was bunking the class.

This intriguing question originated from Biological Molecules Structures and Functions topic in portion Structures and Functions of Biological Molecules of Cell Biology

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Right answer is (c) Free radicals

Explanation: Atoms or molecules that have orbitals containing a single unpaired electron are highly unstable. They are called free radicals. Free radicals may be formed when a covalent bond is broken such that each portion keeps one-half of the shared electrons. They may also be formed when an atom or molecule accepts a single electron transferred during an oxidation-reduction reaction.

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