On the basis of the electrochemical series; which of these ions will show the greater tendency to be discharged at the cathode in an electrolytic cell?

A. cu²⁺
B. sn²⁺
C. fe²⁺
D. zn²⁺

Correct Answer:

Option A – cu²⁺

Explanation

The arrangement of elements in order of increasing electrode potential values is called electrochemical series.

K > Na > Ca > Mg > Al > Zn > Fe > Ni > Sn > Pb > H > Cu > Ag > Au.