Question

The number of isomeric alkenes with molecular formula $ {{C}_{6}}{{H}_{12}} $ are:

• A. 8
• B. 10
• C. 11
• D. 13

Answer 1

Answer: (D)

The number of isomeric alkanes with molecular formula $C_6H_{12}$ are $13$
(1) $CH_2 = CH - CH_2 -CH_2 - CH_2 - CH_3$
(2) $\underset{\text{(cis and trans)}}{CH_3 - CH = CH - CH_2 - CH_2 - CH_3}$
(3) $\underset{\text{(cis and trans)}}{CH_3 - CH_2 - CH = CH - CH_2 - CH_3}$
(4) $CH_2 = CH - \overset{\underset{|}{C}H_3}{C}H-CH_2 - CH_3$
(5) $CH_2 = \overset{\underset{|}{C}H_3}{C}- CH_2 - CH_2 - CH_3$
(6) $CH_2 = CH - CH_2 - \overset{\underset{|}{C}H_3}{C}- CH_3$
(7) $\underset{\text{(cis and trans)}}{CH_3 - CH = CH - \overset{\underset{|}{C}H_3}{C}H - CH_3}$
(8) $CH_3 - \overset{\underset{|}{C}H_3}{C} = CH - CH_2 - CH_3$
(9) $\underset{\text{(cis and trans)}}{CH_3 - CH = \overset{\underset{|}{C}H_3}{C}-CH_2 - CH_3}$