👉 In chemistry, the term "isomerous" refers to a molecule that has an identical structure but differs in one or more chemical properties. Isomers are molecules with similar structures but with different conformations (shapes) of their atoms and bonds. Isomers can be distinguished by their chemical behavior under certain conditions, such as heating or pressure. For example, two isomers of the same compound may have very different physical properties when heated at different temperatures or pressures. Isomerism also plays a crucial