Select the choice that best describes the relationship of the pair of compounds.

Select the choice that best describes the relationship of the following pair of compounds

Answer

General guidance

Concepts and reason
Isomers are the compounds that have same molecular formula but different arrangement of atoms in space or different bonding between atoms. Two isomeric compounds have different physical and chemical properties.

Fundamentals

There are various types of isomers such as constitutional isomers, geometric isomers etc. Constitutional isomers have different connectivity between atoms whereas geometrical isomers have different arrangement of atoms or groups across the double bond.

Step-by-step

Step 1 of 2

The structures of the two compounds are given below:

Understanding the bonding arrangement between the atoms is very important in order to determine the relationship between two molecules.

Step 2 of 2

Rotation of first molecule by the angle of , gives the second molecule. 1800

The given two molecules are identical. constitutional isomers
OO
geometric isomers
the same compound
O
not isomeric


A molecule can be rotated around an axis in order to determine its relation with other molecules. In the present case, the first molecule gives the second molecule on rotation, which implies that both the molecules are identical.

Answer

The given two molecules are identical. constitutional isomers
OO
geometric isomers
the same compound
O
not isomeric

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