Question

Although metals form basic oxide, which of the following metals form an amphoteric oxide?
Na
Ca
Al
Cu
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Answer 1

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Although metals form basic oxide, which of the following metals form an amphoteric oxide?

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Aluminium (Al) metal forms amphoteric oxide (Al2O2) which shows basic as well as acidic behaciour.

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Answer 2

Explanation:

Metals in general form basic oxides when they combine with oxygen. In the case of Aluminium, it forms an amphoteric oxide. Amphoteric oxides are metal oxides that can react with both acids as well as alkalis producing salt and water.

option A