Question

Two compounds which have the same molecular formula but differ in properties are called:

• A. isobars
• B. isotopes
• C. isomers
• D. allotropic

Answer 1

Answer: (C)

An isomer is a molecule with the same chemical formula as another molecule, but with a different chemical structure i.e. an isomer contains the same number of atoms of each element, but have different arrangements of their atoms.Isomers do not necessarily share similar properties, unless they also have the same functional groups.