Question

explain isomerism with an example

Answer 1

Isomers are molecules that have the same molecular formula, but have a different arrangement of the atoms in space. That excludes any different arrangements which are simply due to the molecule rotating as a whole, or rotating about particular bonds. Forexample, both of the following are the same molecule.

Answer 2

when atom can assume different configuration
,the phenomenon is termed as isomerism.
examples ortho-dioxin and part-time dioxin.