JEE Previous Year Question

Total number of species from the following which can undergo disproportionation reaction______ $H_2{O}_2\text{,}{\text{ClO}}_3^{-}\text{,}{P}_4\text{,}{\text{Cl}}_2\text{,}\text{Ag}\text{,}{\text{Cu}}^{+1}\text{,}{F}_2\text{,}{\text{NO}}_2\text{,}{K}^{+}$

Topic: JEE PYQ

Answer: 6. Full step-by-step solution below.