Question

Number of structural isomers possible for $C_6{H}_{14}$ and $C_7{H}_{16}$ are respectively?

• A. 5 and 7
• B. 5 and 9
• C. 6 and 7
• D. 4 and 8

Answer 1

The correct option is B

5 and 9

Both $C_6{H}_{14}$ and $C_7{H}_{16}$ are alkenes as they have general formula $C_n{H}_{2n+2}$.

The isomers of $C_6{H}_{14}$ are 1) n-hexane 2) 2-methyl pentane 3) 3-methyl pentane 4) 2,3-dimethyl butane. 5) 2,3-dimethyl butane.

The isomers of $C_7{H}_{16}$ are 1) n-heptanes 2) 2-methyl hexane 3) 3-methyl hexane 4) 2,2- dimethyl pentane 5) 3,3- dimethyl pentane 6) 2,3- dim ethyl pentane 7) 2,4- dim ethyl pentane 8) 3-ethyl pentane 9) 2,2,3- trim ethyl butane