Answer:
2 K + 1 Cl₂ → 2 KCl
Step-by-step explanation:
Yes, it would just be 1.
This is about balancing the reaction.
Chlorine always exits as diatomic gas and not as a single atom.
In this reaction, chlorine gas reacts with potassium atom to form potassium chloride.
In reactants, two K is reacting with 1 Cl₂ molecule
product is 2 molecules of KCl salt.
Further, K is undergoing oxidation from 0 to +1 state.(1 electron loss)
Cl is undergoing reduction from 0 to -1 state.(1 electron gain)
Since there are two atoms undergoing oxidation and reduction, total number of electron transfer is 2.