Question

How does the reducing power of elements vary on moving down the electrochemical series?

Answer 1

1. On moving down the electrochemical series (i.e., from top to bottom), the standard reduction potential increases.
2. As a result, the reducing power of elements decreases because their tendency to lose electrons (i.e., get oxidised) becomes less.
3. Therefore, elements at the top of the series (like Li, K, Ca) are strong reducing agents, while those at the bottom (like F₂, Cl₂) are weak reducing agents or strong oxidising agents.