AP BIOLOGY

Detailed explanation-1: -Three isomers of pentane are: 2-methyl butane, 3-methyl butane and 2, 2-dimethyl propane .

Detailed explanation-2: -The hydrocarbon 2-methyl butane is an isomer of n-pentane.

Detailed explanation-3: -2, 2-dimethyl butane is a chain isomer of 2-methyl pentane because, the molecular formula of both the compounds are the same but the number of carbon atoms in the longest chains differ.

Detailed explanation-4: -Solution: The type of constitutional isomerism that exists between n-pentane and 2-methyl butane is chain isomerism.

Detailed explanation-5: -There are 4 structural isomers of 2-methyl butane. 1-Chloro-2-methylbutane. 2-chloro-2-methylbutane. 3-chloro-2-methylbutane. 4-chloro-2-methylbutane.