For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated:
(a) `C_(4)H_(8)`(one double bond)
(b) `C_(5)H_(8)` (one triple bond)

Explanation

(a)Isomers of `C_4H_8` having one double bond are :
(i)`underset"But-1-ene"(overset4CH_3overset3CH_2-overset2CH=overset1CH_2)`

(iv)`underset"2-Methylprop-1-ene"(CH_3-oversetoverset(CH_3)|C=CH_2)`
(b)(i)`underset"Pent-1-yne"(CH_3CH_2CH_2overset2C-=overset1CH)` , (ii)`underset"Pent-2-yne"(CH_3CH_2-C-=overset2C-overset1CH_3)` , (iii)`underset"3-Methylbut-1-yne"(CH_3overset3- oversetoverset(CH_3)|(CH)-overset2C-=overset1CH)`