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Ashley Kao 1H wrote:How would we know that SO3 is acidic? Couldn't it be amphoteric as well?
Generally, metal oxides (Group 1 and Group 2) are basic, and nonmetal oxides (right-hand side of periodic table) are acidic. Also, metalloid oxides tend to be amphoteric.
Since SO3 has S atom, which is nonmetal, we can determine it is acidic. Hope this helps!
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