Question

How many structural isomers (include all types except optical) can be drawn for C5H10 ?

A) 5
B) 6
C) 7
D) 11
E) 12

Answer 1

The number of structural isomers for C5H10 is 7.

Step-by-step explanation:

The number of structural isomers for C5H10 can be determined by considering the different arrangements of its atoms. In this case, we have a pentane molecule with a formula of C5H10.

The possible structural isomers for pentane are:

1. n-pentane (straight chain)
2. 2-methylbutane (branched chain)
3. 2,2-dimethylpropane (branched chain)
4. 2-ethylbutane (branched chain)
5. 3-methylpentane (branched chain)
6. 2,3-dimethylbutane (branched chain)
7. 2,2-dimethylbutane (branched chain)

Hence, the correct answer is C) 7.