91Ó°ÊÓ

Alkyl groups are created by taking out one hydrogen atom form the alkane chain. The symbol R is used to indicate an alkyl group in structural formula.

The names of the eight carbon alkyl groups in Problem 3-7 can be given as:

Names of the eight carbon alkyl groups

The pentyl isomer has all five carbon atoms in a straight chain.

In the compound 1-Methylbutyl four carbons are present in the straight chain and a methyl group is the substituent.

In the compound, 1-Ethylpropyl, three carbons are in straight chain. The first carbon has ethyl groups as the substituent.

In the compound 2-Methylbutyl, four carbon atoms are there in the main chain.The second carbon atom is substituted with a methyl group.

In the compound 3-Methylbutyl, four carbon atoms are there in the main chain. The third carbon is substituted by a methyl group.

In the compound, 1,1-Dimethylpropyl, three carbon atoms form the main chain. The first carbon atom comprises two methyl groups.

In the compound, 1,2-Dimethylpropyl, the three carbon atoms form the main chain. The first and second carbon atoms are substituted with a methyl group.

In the compound 2,2-Dimethylpropyl, the three carbon atoms form the main chain. The second carbon atom comprises two methyl groups as the substituent.