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 undergoes thermal decomposition to yield both basic and acidic oxides simultaneously, we will analyze each of the given salts step by step.

### Step 1: Understanding Thermal Decomposition
Thermal decomposition is a chemical reaction where a compound breaks down into two or more simpler substances when heated. We need to identify the products formed from the thermal decomposition of each salt listed.

### Step 2: Analyzing Each Salt
1. **Ammonium Chlorate (NH4ClO4)**
- Upon heating, ammonium chlorate decomposes to produce nitrogen gas (N2), chlorine gas (Cl2), oxygen gas (O2), and water (H2O).
- **Products:** N2, Cl2, O2, H2O
- **Oxide Types:** Water is a neutral oxide, thus it does not contribute to basic or acidic oxides.
- **Conclusion:** This does not yield both basic and acidic oxides.

2. **Calcium Carbonate (CaCO3)**
- When heated, calcium carbonate decomposes to form calcium oxide (CaO) and carbon dioxide (CO2).
- **Products:** CaO, CO2
- **Oxide Types:** CaO is a basic oxide, and CO2 is an acidic oxide.
- **Conclusion:** This yields both basic and acidic oxides simultaneously.

3. **Sodium Nitrate (NaNO3)**
- Upon thermal decomposition, sodium nitrate produces sodium nitrite (NaNO2), nitrogen dioxide (NO2), and oxygen (O2).
- **Products:** NaNO2, NO2, O2
- **Oxide Types:** No basic oxide is formed; NO2 is an acidic oxide.
- **Conclusion:** This does not yield both basic and acidic oxides.

4. **Ammonium Nitrite (NH4NO2)**
- When heated, ammonium nitrite decomposes to produce nitrogen gas (N2) and water (H2O).
- **Products:** N2, H2O
- **Oxide Types:** Water is neutral; no acidic or basic oxides are formed.
- **Conclusion:** This does not yield both basic and acidic oxides.

### Step 3: Conclusion
Based on the analysis, the only salt that yields both basic and acidic oxides upon thermal decomposition is **Calcium Carbonate (CaCO3)**.

### Final Answer
The correct answer is **Calcium Carbonate (CaCO3)**.

---