Give an example of a metallic oxide that forms salt and water with acids as well as bases. What is the common name given to such oxides?

Explanation

**Step-by-Step Solution:**

1. **Identify the Type of Oxide**: The question asks for a metallic oxide that can react with both acids and bases to produce salt and water. Such oxides are known as amphoteric oxides.

2. **Define Amphoteric Oxides**: Amphoteric oxides are metallic oxides that can react with both acids and bases. They exhibit both acidic and basic properties.

3. **Provide an Example**: A common example of an amphoteric oxide is aluminum oxide (Al₂O₃).

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