Write the possible isomers of the aromatic compound having molecular formula `C_(7)H_(7)Cl`. Which of these will have weakest C-Cl bond ?

Explanation

To solve the problem of finding the possible isomers of the aromatic compound with the molecular formula C7H7Cl and determining which of these has the weakest C-Cl bond, we can follow these steps:

### Step 1: Identify the Structure
The molecular formula C7H7Cl indicates that we are dealing with an aromatic compound. The presence of 7 carbon atoms suggests that we can have a benzene ring with substituents.

### Step 2: Calculate the Degree of Unsaturation
Using the formula for degree of unsaturation (DB):
\[ \text{DB} = \frac{C + 1 - H - N + X}{2} \]
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