Thermal decomposition of which of the salt listed below yield a basic and acidic oxides simultaneously?

Options

A. `NH_(4)ClO_(4)`
B. `CaCO_(3)`
C. `NanO_(3)`
D. `NH_(4)NO_(2)`

Explanation

To solve the question of which salt, when thermally decomposed, yields both a basic and an acidic oxide simultaneously, we can analyze the options one by one.

### Step-by-Step Solution:

1. **Identify the salts given in the options**: We need to analyze the thermal decomposition of each salt provided in the question.

2. **Analyze the first option: NH4ClO4 (Ammonium Perchlorate)**:
- Upon decomposition, NH4ClO4 produces HCl, N2, O2, and H2O.
- **Result**: There are no basic and acidic oxides formed. This option is incorrect.

3. **Analyze the second option: CaCO3 (Calcium Carbonate)**:
- When heated, CaCO3 decomposes into calcium oxide (CaO) and carbon dioxide (CO2).
- **Result**: CaO is a basic oxide and CO2 is an acidic oxide. This option is correct as it yields both types of oxides.

4. **Analyze the third option: NaNO3 (Sodium Nitrate)**:
- Upon heating, NaNO3 decomposes into NaNO2 (Sodium Nitrite) and O2.
- **Result**: This does not yield any basic or acidic oxides. This option is incorrect.

5. **Analyze the fourth option: NH4NO2 (Ammonium Nitrite)**:
- When heated, NH4NO2 decomposes into nitrogen gas (N2) and water (H2O).
- **Result**: There are no basic or acidic oxides produced. This option is incorrect.

6. **Conclusion**: The only salt that yields both a basic and an acidic oxide upon thermal decomposition is **CaCO3**.

### Final Answer:
The correct option is **CaCO3 (Calcium Carbonate)**, as it decomposes to form CaO (basic oxide) and CO2 (acidic oxide).

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