The process of rusting is an example of the formation of

The process of rusting is an example of the formation of

  1. Basic oxide ✓
  2. Acidic oxide
  3. Amphoteric oxide
  4. Reducing oxide

Explanation

Rust is iron oxide, which is a basic oxide. Metal oxides are usually basic. They react with acids to form salts and water.

Non-metal oxides are acidic. Amphoteric oxides act as both acid and base. Reducing oxides is not a standard classification.

Remember: Metal oxides are basic. Non-metal oxides are acidic. This is a fundamental pattern.