Question

What does an atom gain or lose in an oxidation-reduction reaction?

Answer 1

Answer: electrons

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

$M\rightarrow M^{n+}+ne^-$

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

$M^{n+}+ne^-\rightarrow M$

Answer 2

The atom gains an electron in an oxidation-reduction reaction.

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