Question

Refer to the periodic table given in your book and now answer the following questions:

1. Select the possible non metals that can show disproportionation reaction. 
2. Select three metals that can show disproportionation reaction

Answer 1

Refer to the periodic table given in your book and answer the following questions:

1. Possible non-metals that can show disproportionation reaction: 
   
   Chlorine (Cl), Bromine (Br), Iodine (I)  
   
   Explanation: These non-metals exhibit multiple oxidation states. Hence, the same element can undergo simultaneous oxidation and reduction in a reaction. For example, chlorine can undergo disproportionation in alkaline medium to form chloride and hypochlorite/chlorate ions.
2. Three metals that can show disproportionation reaction: 
   
   Copper (Cu), Mercury (Hg), Tin (Sn) 
   
   Explanation: These metals exist in more than one oxidation state. An intermediate oxidation state can disproportionate into a lower and a higher oxidation state. For example, Cu⁺ can disproportionate into Cu and Cu²⁺.