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Question

Which group 13 element forms a trioxide with the highest acidity?

Options

Choose one · Correct answer highlighted

Explanation

Acidity of group 13 trioxides decreases down the group. B₂O₃ (B, smallest) is the most acidic, forming boric acid, unlike Al₂O₃ (amphoteric), Ga₂O₃, or In₂O₃.