Assertion: According to a preferential discharge theory, that ion will discharge first which requires more energy.
Reason: The potential at which ion gets discharged is known as deposition potential or discharge potential.
Answer & explanation
Correct answer: option 4
According to a preferential discharge theory, that ion will discharge first which requires more energy.
Discharge potential: The potential at which ion gets discharged is known as deposition potential or discharge potential.
Discharge potential = Electrode potential + Over voltage