D And F Block Elements

Nylon-6,6 is a type of synthetic polymer known as a polyamide. It is formed through the condensation polymerization of two monomers: adipic acid and hexamethylene diamine. In this process, each monomer contains a functional group that reacts to form a long chain with amide linkages, resulting in the polymer known as Nylon-6,6.
- Adipic acid is a dicarboxylic acid (contains two carboxyl groups), and - Hexamethylene diamine is a diamine (contains two amine groups). These two react to form Nylon-6,6, which is widely used in textiles and engineering materials.
Thus, the correct answer is , adipic acid and hexamethylene diamine.