The general molecular formula for the homologous series of alkynes is `C_(n)H_(2n-2)`. Write down the individual molecular formulae of the value 2, 3 and 4 respectively for 'n' in this formula.

Explanation

For first member, n = 2,
`C_(n)H_(2n-2)=C_(2)H_(2xx2-2)=C_(2)H_(2)`
b. For Second member, n = 3,
`C_(n)H_(2n-2)=C_(3)H_((2xx3-2))=C_(3)H_(4)`
c. For third member, n = 4,
`C_(n)H_(2n-2)=C_(4)H_((2xx4-2))=C_(4)H_(6)`