Question 1
How many structural isomers can you draw for pentane?
Structural isomerism is also called constitutional isomerism. It is a kind of isomerism where the molecules have the same molecular formula with different orders and bondings.
Pentane has three structural isomers namely n-pentane, isopentane, and neo-pentane. Structures of all the three isomers are given here:
(a) Pentane
(b) 2-methyl butane
(c) 2,2-dimethyl propane