Polymerization S cientists observed nature's methods of joining elements into chains and duplicated that natural process to produce macromolecules or polymers.
Isomers are variations in the molecular structure of the same composition.
One class of isomers is known as stereoisomers , which, in turn, is divided into three categories. The first category is called isotactic stereoisomerism. In a syndiotactic stereoisometric arrangement, the R group of atoms are located on opposite sides of the carbon chain in an alternating fashion. The third category is called atactic stereoisomerism, in which the R groups are in a random position. It is important to note that copolymers and terpolymers consist of units from each contributing mer and are not an alloy of mers.