Arrange the following in decreasing order of dipole moment
(1) m-Dichlorobenzene
(2) o-Dichlorobenzene (3) p-Dichlorobenzene

Explanation

To arrange m-Dichlorobenzene, o-Dichlorobenzene, and p-Dichlorobenzene in decreasing order of dipole moment, we can follow these steps:

### Step 1: Understand the Structure of Each Compound
- **o-Dichlorobenzene (ortho)**: The two chlorine atoms are adjacent to each other on the benzene ring.
- **m-Dichlorobenzene (meta)**: The two chlorine atoms are separated by one carbon atom on the benzene ring.
- **p-Dichlorobenzene (para)**: The two chlorine atoms are opposite each other on the benzene ring.

### Step 2: Analyze the Dipole Moments
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