AP BIOLOGY

Detailed explanation-1: -Cis–trans isomerism, also known as geometric isomerism or configurational isomerism, is a term used in chemistry that concerns the spatial arrangement of atoms within molecules. The prefixes “cis” and “trans” are from Latin: “this side of” and “the other side of", respectively.

Detailed explanation-2: -Thus cis-and trans-2-butene are configurational isomers, as are cis-and trans-1, 2-dimethylcyclopropane. The terms cis-trans isomerism or geometric isomerism commonly are used to describe configurational isomerism in compounds with double bonds and rings.

Detailed explanation-3: -Geometric isomerism (also known as cis-trans isomerism or E-Z isomerism) is a form of stereoisomerism. This page explains what stereoisomers are and how you recognise the possibility of geometric isomers in a molecule.

Detailed explanation-4: -One conformational isomer changes into other without any bond rearrangement i.e. due to single bond rotation while geometrical isomers are converted in to one form to other by bond rearrangement i.e. bond breaking and bond making.

Detailed explanation-5: -Configurational isomers are stereoisomers that cannot be converted into one another by rotating the molecule around a single bond. These configurational isomers can be found in two types as geometrical isomers and optical isomers.