Which of the following is the only exothermic oxide of chlorine?

Options

A. `Cl_(2)`O
B. `ClO_(2)`
C. `Cl_(2)O_(6)`
D. `Cl_(2)O_(7)`

Explanation

To solve the question, "Which of the following is the only exothermic oxide of chlorine?", we can follow these steps:

### Step 1: Identify the oxides of chlorine
We need to list the common oxides of chlorine. The most notable oxides include:
- ClO (chlorine monoxide)
- ClO2 (chlorine dioxide)
- Cl2O (dichlorine monoxide)
- Cl2O7 (trichlorine heptoxide)
...