When `LiNO_(3)` is heated, it gives oxide, `Li_(2)O` whereas other alkali metals nitrates decompose to give corresponding

Options

A. nitrite
B. peroxide
C. both nitrite and oxide
D. none of these

Answer

To solve the question, we need to analyze the decomposition of lithium nitrate and compare it with the decomposition of other alkali metal nitrates.

### Step-by-Step Solution:

1. **Identify the Compound**:
- We start with lithium nitrate, which is represented as \( \text{LiNO}_3 \).

2. **Heating Lithium Nitrate**:
- When lithium nitrate is heated, it decomposes to form lithium oxide and nitrogen dioxide. The balanced chemical equation for this reaction is:
\[ 4 \text{LiNO}_3 \rightarrow 2 \text{Li}_2\text{O} + 4 \text{NO}_2 + \text{O}_2 \]
- From this reaction, we can see that lithium nitrate produces lithium oxide (\( \text{Li}_2\text{O} \)).

3. **Compare with Other Alkali Metal Nitrates**:
- Now, let's consider the other alkali metal nitrates, such as sodium nitrate (\( \text{NaNO}_3 \)). When sodium nitrate is heated, it decomposes to form sodium nitrite and oxygen:
\[ 2 \text{NaNO}_3 \rightarrow 2 \text{NaNO}_2 + \text{O}_2 \]
- This shows that sodium nitrate produces sodium nitrite (\( \text{NaNO}_2 \)) instead of an oxide.

4. **Conclusion**:
- Based on the above reactions, we conclude that lithium nitrate decomposes to form lithium oxide, while other alkali metal nitrates (like sodium nitrate) decompose to form corresponding nitrites.

5. **Final Answer**:
- Therefore, the correct answer to the question is that lithium nitrate gives lithium oxide, while other alkali metal nitrates give nitrites.

### Answer:
The correct option is **nitrite**.