Question

Minimum number of carbon atom in alkyne to show chain .position,and functional isomerism

Answer 1

Positional isomers are constitutional isomers that have the same carbon skeleton and the same functional groups but differ from each other in the location of the functional groups on or in the carbon chain.

Positional isomerism is generally exhibited by alkenes, alkynes, alkyl halides, ketones and alcohols etc.

So, in an alkane chain, it'd require at least 3 carbons.

Example: Propyl bromide (1) and isopropyl bromide (2) are constitutional isomers.



They have the same functional group, a bromine atom. The difference between 1 and 2 is in the location of the bromine atom on the carbon chain. In 1, the bromine atom is on a terminal carbon atom; in 2, it is on the internal carbon atom. Thus, 1 and 2 are positional isomers.

Answer 2

Explanation:

Therefore, the minimum number of carbon atoms required for chain isomerism in alkynes are 5 and the minimum number of carbon atoms required for position isomerism in alkynes are 4.

Hope this will help you