Question

In a redox reaction, which particles are lost and gained in equal numbers?(1) electrons (3) hydroxide ions
(2) neutrons (4) hydronium ions

Answer 1

In redox reactions the particles that are lost and gained are ELECTRONS. (option 1)

Answer 2

Answer: Option (1) is the correct answer.

Explanation:

A redox reaction is a reaction in which both oxidation and reduction takes place.

For example, $H_{2} + F_{2} \rightarrow 2HF$

Oxidation-half reaction : $H_{2} \rightarrow 2H^{+} + 2e^{-}$

Reduction-half reaction : $F_{2} + 2e^{-} \rightarrow 2F^{-}$

Hence, we can see that electrons are involved in a redox reaction.

Therefore, we can conclude that in a redox reaction, electrons are the particles which are lost and gained in equal numbers.