`NCl_3` is a stable compound. (T/F)

Explanation

To determine whether the statement "NCl₃ is a stable compound" is true or false, we can analyze the properties and behavior of nitrogen trichloride (NCl₃).

### Step-by-Step Solution:

1. **Understanding NCl₃**:
- Nitrogen trichloride is a chemical compound composed of one nitrogen atom and three chlorine atoms.

2. **Stability of NCl₃**:
- NCl₃ is known to be a highly unstable compound. It does not maintain its structure under normal conditions.

3. **Decomposition Reaction**:
- NCl₃ can decompose into nitrogen gas (N₂) and chlorine gas (Cl₂). The reaction can be represented as:
\[ 2 \text{NCl}_3 \rightarrow \text{N}_2 + 3 \text{Cl}_2 \]

4. **Exothermic Nature**:
- The decomposition of NCl₃ is an exothermic reaction, meaning it releases a significant amount of energy. This is indicative of instability, as stable compounds typically do not release energy upon decomposition.

5. **Explosive Properties**:
- Due to its instability and the energy released during decomposition, NCl₃ is classified as an explosive compound. This further supports the notion that it is not stable.

6. **Conclusion**:
- Based on the above points, we conclude that the statement "NCl₃ is a stable compound" is **false**.

### Final Answer:
**False**