Option No. 1 at the cathode in both an electrolytic cell and a voltaic cell
Negative ion arrives at the anode, attracted by electrostatic forces, where they lose electrons. Loss of electrons is defined as oxidation.
The reverse process occur at the negative electrode, where positive ions pick up electrons. They are reduced.
Given :
Chlorine's 3p sub level has 5 electrons in it.
To Find :
How many electron(s) more in the 3p sub-level to make it stable.
Solution :
Electronic configuration of Chlorine is :
[Ne] 3s² 3p⁵.
We know, p-orbit is stable with 6 electronic.
Therefore, to stable p-orbit 1 more electron is required in 3p sub-level.
Hence, this is the required solution.