Classify acidic, basic, and amphoteric oxides

Classify oxides as acidic, such as SO₂ and CO₂; basic, such as CuO and CaO; or amphoteric, limited to Al₂O₃ and ZnO, in relation to metallic and non-metallic character.

As the syllabus states it

Classify oxides as acidic, including $\mathrm{SO}_{2}$ and $\mathrm{CO}_{2}$ , basic, including CuO and CaO , or amphoteric , limited to $\mathrm{Al}_{2} \mathrm{O}_{3}$ and ZnO , related to metallic and mon-metallic character.

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