How many of the following are acidic oxides? N_2O_3, As_2O_3, Bi_2O_3, P_4O_6, Sb_2O_3

JEE Main Chemistry question

How many of the following are acidic oxides? , , , ,

Answer: 2

Down group 15, the acid-base character of the trioxides shifts from acidic to amphoteric to basic as metallic character increases: and are

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Question ID VK-147087