Question

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

(iv) Reducing agent​

Answer 1

A reducing agent reduces other substances by providing electrons and itself gets oxidised in the process.​

K $\to$ K${}^{+}$ + e${}^{-}$ (Loss of one electron)​

​Since potassium provides electron to reduce Cl atom to Cl- ion, it is acting as the reducing agent and gets oxidised by in the process due to loss of electrons. ​