Question

Potassium (at No.19) and chlorine (at No.17) form a compound. Explain the formation of the compound on the basis of ​ ​

(c) oxidizing agent

Answer 1

(c) $2K+{Cl}_2\to 2KCl$
An oxidizing agent oxidizes other substances either by accepting electrons or by providing oxygen or an electronegative ion, or by removing hydrogen or an electropositive ion.

${Cl}_2+2e^{-}\to 2{Cl}^{-}$
Since chlorine accepts electrons to form ${Cl}^{-}$in $KCl$ and $K$ undergoes oxidation. Chlorine acts as an oxidizing agent and gets reduced.