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.
