Write the thermal decomposition reaction of following compounds
`KNO_3`

Explanation

**Step-by-Step Solution:**

1. **Identify the Compound**: The compound we are considering is potassium nitrate, which is represented by the chemical formula \( KNO_3 \).

2. **Understand Thermal Decomposition**: Thermal decomposition is a chemical reaction where a single compound breaks down into two or more products when heated.

3. **Write the Reaction**: When potassium nitrate (\( KNO_3 \)) is heated, it decomposes into potassium nitrite (\( KNO_2 \)) and oxygen gas (\( O_2 \)). The balanced thermal decomposition reaction can be written as:
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