Name the term used for the configuration of a stereoisomer having r groups whose positions alternate from one side to the other side along the backbone chain.

Syndiotactic

Explanation:

Syndiotactic is the term used for the configuration of a stereoisomer having R groups whose positions alternate from one side to the other side along the backbone chain.

In simple words , they are polymers that have the substitute group arranged in alternating manner.

For example, Syndiotic polystyrene,  Gutta percha  etc.

i believe that it is a exoplanet

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants