Question

The term 'Isomerism' applies to organic compounds with the same __.

• A. molecular formula but different structural formulae
• B. molecular formula but different empirical formulae
• C. empirical formula but different molecular formulae
• D. structural formulae but different molecular formula

Answer 1

The correct option is A

molecular formula but different structural formulae

Carbon compounds show isomerism, the phenomenon by which two or more compounds have same molecular formula but different structural formula with the difference in properties. i.e the formula $C_2{H}_{6}O$ represents two different compounds namely ethyl alcohol ($C_2{H}_{5}OH$) and dimethyl ether ($C{H}_{3}OC{H}_3$).