Question

The compound formed by $C_{13}{H}_{28}$ with the shortest possible parent carbon chain will contain:

• A. 5 carbon atoms
• B. 6 carbon atoms
• C. 7 carbon atoms
• D. 8 carbon atoms

Answer 1

The correct option is A 5 carbon atoms

There are about 802 isomers of given alkane $C_{13}{H}_{28}$.

The chain length can be as long as 13 carbons while the shortest carbon parent chain will have five carbon.

There can be again five isomers with five carbons as parent chain s shown in the figure.

The names are:

1. 3,3-diethyl-2,2,4,4-tetramethylpentane
   
2. 2,2,3,4,4-pentamethyl-3-(propan-2-yl)pentane
   
3. 3-ethyl-2,2,4-trimethyl-3-(propan-2-yl)pentane
   
4. 2,4-dimethyl-3,3-di(propan-2-yl)pentane
   
5. 3-tert-butyl-2,2,4,4-tetramethylpentane