Question

How many structural isomers of pentane, having molecular formula C$_5$H$_{12$, are possible?}

• A. 2
• B. 3
• C. 4
• D. 5 \bigskip

Hint:

Structural isomers have the same molecular formula but different connectivity between atoms.

Answer 1

The Correct Option is B

Pentane (C$_5$H$_{12}$) has three structural isomers: 1. n-Pentane (straight chain) 2. Iso-pentane (branched chain) 3. Neo-pentane (highly branched)