Beryllium on ignition in air gives

Options

A. BeO
B. `Be_(3)N_(2)`
C. Both (1) & (2)
D. BeC

Answer

To solve the question "Beryllium on ignition in air gives", we need to analyze the reactions that occur when beryllium is ignited in the presence of air.

### Step-by-Step Solution:

1. **Understanding the Components of Air**:
- Air is primarily composed of nitrogen (N₂) and oxygen (O₂). When beryllium is ignited in air, it can react with both of these components.

2. **Reaction with Oxygen**:
- Beryllium (Be) reacts with oxygen (O₂) to form beryllium oxide (BeO).
- The balanced chemical equation for this reaction is:
\[ 2 \text{Be} + \text{O}_2 \rightarrow 2 \text{BeO} \]

3. **Reaction with Nitrogen**:
- Beryllium can also react with nitrogen (N₂) to form beryllium nitride (Be₃N₂).
- The balanced chemical equation for this reaction is:
\[ 3 \text{Be} + \text{N}_2 \rightarrow \text{Be}_3\text{N}_2 \]

4. **Conclusion**:
- Therefore, when beryllium is ignited in air, it can produce both beryllium oxide and beryllium nitride.
- The final answer is that beryllium on ignition in air gives beryllium oxide (BeO) and beryllium nitride (Be₃N₂).

### Final Answer:
Beryllium on ignition in air gives beryllium oxide (BeO) and beryllium nitride (Be₃N₂).

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