Sum of total number of amphoteric and neutral oxides among the folllowing is :
`CO, NO, Al_(2)O_(3), PbO_(2), CaO, SnO_(2), ZnO`

Answer

To solve the question, we need to identify the amphoteric and neutral oxides from the given list: `CO, NO, Al_(2)O_(3), PbO_(2), CaO, SnO_(2), ZnO`.

### Step 1: Identify Amphoteric Oxides
Amphoteric oxides are those that can react with both acids and bases. From the list:
- **Al₂O₃ (Aluminum oxide)**: Amphoteric
- **PbO₂ (Lead(IV) oxide)**: Amphoteric
- **SnO₂ (Tin(IV) oxide)**: Amphoteric
- **ZnO (Zinc oxide)**: Amphoteric

**Total Amphoteric Oxides = 4**

### Step 2: Identify Neutral Oxides
Neutral oxides do not react with either acids or bases. From the list:
- **CO (Carbon monoxide)**: Neutral
- **NO (Nitric oxide)**: Neutral

**Total Neutral Oxides = 2**

### Step 3: Calculate the Sum
Now, we sum the total number of amphoteric and neutral oxides:
- Total = Total Amphoteric Oxides + Total Neutral Oxides
- Total = 4 (amphoteric) + 2 (neutral) = 6

### Final Answer
The sum of the total number of amphoteric and neutral oxides among the given options is **6**.

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