Question

1) Identify chiral and achiral molecules in each of the following pair of compounds. (Wedge and Dash representation according to Class $XI,Fig.12.1.)$


2) Identify chiral and achiral molecules in each of the following pair of compounds. (Wedge and Dash representation according to Class $XI,Fig.12.1.)$


3) Identify chiral and achiral molecules in each of the following pair of compounds. (Wedge and Dash representation according to Class $XI,Fig.12.1.)$

Answer 1

1) An asymmetric carbon atom (chiral carbon) is a carbon atom that is attached to four different types of atoms or groups of atoms.


In first molecule, all four groups are different but in second, two groups $(-Br)$ are same.

Hence, first molecule is chiral but second molecule is achiral.

2) An asymmetric carbon atom (chiral carbon) is a carbon atom that is attached to four different types of atoms or groups of atoms.


In first molecule, all four groups are different but in second, two groups $(-C_2{H}_5)$ are same.

Hence, first molecule is chiral but second molecule is achiral.

3) An asymmetric carbon atom (chiral carbon) is a carbon atom that is attached to four different types of atoms or groups of atoms.


In first molecule, all four groups are different but in second, two groups $(-H)$ are same.

Hence, first molecule is chiral but second molecule is achiral.