Question

Potassium (at No. 19) and chlorine (at No. 17) react to form a compound. On the basis of electronic concept, explain ​
(i) oxidation.​

Answer 1

Potassium and chlorine react to form a compound, Potassium chloride ( KCl ).
That is,​ 2K + $C{l}_2$→ 2KCl​
Oxidation: In the electronic concept, oxidation is a process in which an atom or ion loses electron(s).​
Here, potassium undergoes oxidation as it loses an electron and forms a cation.​ K → $K^{+}$ + $e^{-}$ (Loss of one electron)​.