Question

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

Answer 1

Potassium and chlorine react to form a compound, Potassium chloride (KCl).
Reaction involved for this is :-​ 2K + $C{l}_2$→ 2KCl​
An oxidising agent oxidises other substances by accepting electrons and itself gets reduced in the process.​
$C{l}_2$ + 2e-→ $2C{l}^{-}$ (Gain of two electron)​
Since, chlorine atom accepts electrons to form $C{l}^{-}$.
Hence chlorine will act as an oxidising agent and gets reduced due to gain of electrons.​ ​