are oxides of metalloids amphoteric !?
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Metalloids generally form amphoteric oxides in the lower oxidation state and acidic oxides in the higher state. They do not form basic oxides. For example, arsenic and antimony form As2O3 and Sb2O3 in the trivalent state which are amphoteric. These oxides react with both acids and alkalis.
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Oxides made with the elements known as metalloids (B, Si, Ge, As, Sb, Te, and Po) can be acidic or basic depending on their environment; in other words they are amphoteric.
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