sir, what is isomers, monomers etc? can you explain?

This is Madam.

Isomers are compounds with the same chemical formula but different structures. An important test of Werner's theory of coordination complexes involved the study of coordination complexes that formed isomers (literally, "equal parts").

In chemistry, isomers are compounds with the same molecular formula but different structural formulae^[1] Isomers do not necessarily share similar properties unless they also have the same functional groups. This should not be confused with a nuclear isomer, which involves a nucleus at different states of excitement. There are many different classes of isomers, like stereoisomers, enantiomers, geometrical isomers, et c

A monomer (from Greek mono "one" and meros "part") is a small molecule that may become chemically bonded to other monomers to form a polymer