Chemistry - STRUCTURAL ISOMERISM Question with Solution | TestHub
Which of the following statements are correct?
(1) A pair of position isomers differs only in the position of the functional group(s).
(2) A pair of structural isomers has the same relative molecular mass.
(3) A pair of functional group isomers belongs to different homologous series.
Options:
Answer:
Solution:
Statement (1) is incorrect : position isomers can differ in the position of a multiple bond or a substituent, not only of a functional group (e.g. but-1-ene and but-2-ene, or o-xylene and m-xylene). Statement (2) is correct : structural isomers share a molecular formula, so they have the same relative molecular mass. Statement (3) is correct : functional group isomers contain different functional groups (e.g. an alcohol and an ether), so they belong to different homologous series.
