NO is an acidic oxide, while `NO_(2)` is a neutral oxide.

Answer

To analyze why NO (nitric oxide) is considered an acidic oxide while NO₂ (nitrogen dioxide) is classified as a neutral oxide, we can follow these steps:

### Step 1: Understanding Acidic and Neutral Oxides
- **Acidic Oxides** are oxides that react with water to form acids. They typically come from non-metals.
- **Neutral Oxides** are oxides that do not exhibit acidic or basic properties. They do not react with acids or bases.

### Step 2: Examining NO (Nitric Oxide)
- NO can react with oxygen and water to form nitric acid (HNO₃). The reaction is as follows:
\[ 3NO + \frac{3}{2}O_2 + \frac{3}{2}H_2O \rightarrow 3HNO_3 \]
- This reaction shows that NO can produce an acid, which is a characteristic of acidic oxides.

### Step 3: Examining NO₂ (Nitrogen Dioxide)
- NO₂ does not directly react with water to form an acid. Instead, it can form a mixture of nitric acid and nitrous acid when it reacts with water:
\[ 2NO_2 + H_2O \rightarrow HNO_3 + HNO_2 \]
- However, NO₂ itself does not exhibit acidic behavior in the same way that NO does. It is often considered neutral because it does not have a strong tendency to donate protons (H⁺ ions) in solution.

### Step 4: Conclusion
- Based on the reactions and properties discussed, we conclude that NO is an acidic oxide because it can form an acid upon reaction with water, while NO₂ is classified as a neutral oxide because it does not exhibit strong acidic or basic properties.

### Summary
- NO is an acidic oxide as it forms nitric acid in reactions.
- NO₂ is a neutral oxide as it does not exhibit strong acidic behavior.

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