Explain oxidation and reduction according to electronic concept. Give examples.

Oxidation: It is the process which involves the loss of one or more electrons by an atom, ion or molecule. Thus, there is an increase in positive charge or decrease in negative charge on the atom or ion undergoing oxidation. For example,

Reduction: Reduction is the process which involves the gain of one or more electrons by an atom, ion or molecule. Thus, there is decrease in the +ve charge or increase in the -ve charge on the atom or ion undergoing reduction, e.g.