The question asks about which molecule is chiral in nature. To understand chirality, a molecule is considered chiral if it has a carbon atom bonded to four different substituents, leading to non-superimposable mirror images known as enantiomers.
Propan-2-ol: The structure is CH3-CHOH-CH3. The center carbon (C2) is attached to -OH, -CH3, and -CH3. Here, two substituents are the same (-CH3), so this molecule is not chiral.
Butan-2-ol: The structure is CH3-CH(OH)-CH2-CH3. The center carbon (C2) is bonded to four different groups: -OH, -CH3, -CH2-CH3, and -H. This makes Butan-2-ol chiral.
1-Bromobutane: The structure is CH3-CH2-CH2-CH2-Br. The bromine atom is only bonded to a terminal carbon with only two hydrogens and one butyl group, leading to achirality.
2-Bromopropane: The structure is CH3-CHBr-CH3. Here, the brominated carbon has two same substituents (-CH3 groups) suggesting it is achiral.
Therefore, the correct answer is that Butan-2-ol is the molecule that is chiral in nature. This is because it has a carbon atom with four distinct groups attached, satisfying the requirement for chirality.
