Why do alkyl chlorides have higher dipole moment as compared to aryl chlorides ?

Explanation

### Step-by-Step Solution:

1. **Understanding Dipole Moment**:
- The dipole moment is a measure of the separation of positive and negative charges in a molecule. It is calculated as the product of the charge and the distance between the charges.

2. **Comparing Alkyl Chlorides and Aryl Chlorides**:
- **Alkyl Chlorides**: For example, ethyl chloride (C2H5Cl) consists of a carbon chain bonded to a chlorine atom. The bond between carbon and chlorine is a single bond (C-Cl).
- **Aryl Chlorides**: For example, chlorobenzene (C6H5Cl) consists of a benzene ring with a chlorine atom attached. In this case, resonance occurs due to the aromatic nature of the benzene ring.
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