Which choice is a pair of isomers?

a. CH₃CH₂OH and CH₃OCH₂CH₃

b. 1-heptene and 2-methylhexane

c. NCCH₃ and CH₃CNCH₃

d. CH₂CH₂CH₂CH₂CH₃ and CH₃CH₂CH₂CH (CH₃) ₂

e. methanol and ethene

None

Explanation:

Isomers are organic compounds that have the same molecular formula but different structural formula. What this mean is that these isomers have different arrangement of their atoms. Hence, they belong to different homologous series and exhibit different chemical properties. Hence, it is enough to access whether two different compounds are isomeric using their chemical formula as a yardstick.

Now let us look at our answers. We can see that none of the pairs have the same molecular formula