Refer to the periodic table given in your book and now answer the following questions:
a. Select the possible non metals that can show disproportionation reaction.
b. Select three metals that can show disproportionation reaction.

Explanation

In disproportionation reactions, one of the reacting substances always contains an element that can exist in at least three oxidation states.
(a) P, Cl, and S can show disproportionation reactions as these elements can exist in three or more oxidation states.
(b) Mn, Cu, and Ga can show disproportionation reactions as these elements can exist in three or more oxidation states.