The following two compounds are isomers; that is, they are different compounds with

Key concepts

Cis - trans isomerism

Cis-trans isomerism, also known as geometric isomerism, refers to the presence of two or more stereoisomers (isomers that have the same chemical formula and bond connectivity, but differ in the arrangement of atoms in space) that differ in the arrangement of groups around a double bond or a ring.

In cis isomers, the groups are on the same side of the double bond or ring, while in trans isomers, the groups are on opposite sides of the double bond or ring.

Cis-trans isomers typically have different physical properties and reactivity due to the different spatial arrangement of their atoms and groups.

This type of isomerism is common in organic compounds containing double bonds or rings and is important in understanding the properties and reactivity of these compounds.

Bond order

Bond order is a measure of the number of chemical bonds between two atoms in a molecule or ion. It is used to predict the stability and reactivity of a chemical compound. The bond order is determined by the number of bonds between the atoms, with single bonds having a bond order of 1 , double bonds having a bond order of 2 , and triple bonds having a bond order of 3.

Step 1 of 3

Cis trans isomer of  are given, first we have to give an explanation why these isomers do not undergo interconversion.

                                Trans  - isomer          cis - isomer

In order to interconvert, there has to be a simple rotation around a single bond possible at room temperature.