Question

The number of carbon atoms present in the molecule of fifth member of the homologous series of alkynes is

Answer 1

Alkynes: Molecular and Structural Formulas

The alkynes comprise a series of carbon- and hydrogen-based compounds that contain at

least one triple bond. This group of compounds is a homologous series with the general

molecular formula of Cn H2 n--2 , where n equals any integer greater than one.

The simplest alkyne, ethyne (also known as acetylene), has two carbon atoms and the

molecular formula of C2H2. The structural formula for ethyne is H-C=C-H

Answer 2

Answer:

C6H2n-2

Explanation:

in the case of alkynes first member contains two carbon

so fifth will contain 6 carbon