If two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged is that with the
greater stability in solution
lower electrical charge
smaller mass
stronger tendency to accept electrons
stronger tendency to lose electrons.
Correct answer is D
In an electrolytic cell, when two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged is the one that has the stronger tendency to accept electrons and become a neutral atom.