Pentane has _________ structural isomers.
- A1
- B2
- C3
- D4
Solution & Step-by-step Explanation
Pentane (C
5
H
12
) is an alkane with five carbon atoms. It has exactly 3 structural isomers:
n-pentane (a straight chain of five carbon atoms)
Isopentane / 2-methylbutane (a branched chain with a single methyl group)
Neopentane / 2,2-dimethylpropane (a highly branched chain with two methyl groups on the central carbon)
5
H
12
) is an alkane with five carbon atoms. It has exactly 3 structural isomers:
n-pentane (a straight chain of five carbon atoms)
Isopentane / 2-methylbutane (a branched chain with a single methyl group)
Neopentane / 2,2-dimethylpropane (a highly branched chain with two methyl groups on the central carbon)