Describe the formation of a double bond in a molecule of carbon dioxide `(CO_2)`.

Explanation

To describe the formation of a double bond in a molecule of carbon dioxide (CO₂), we can break down the process into clear steps:

### Step 1: Understand the Composition of CO₂
Carbon dioxide consists of one carbon atom and two oxygen atoms.

**Hint:** Remember that CO₂ means there are two oxygen atoms bonded to one carbon atom.

### Step 2: Determine the Valence Electrons
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