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What are amphoteric oxides ? Give exampl...

What are amphoteric oxides ? Give examples.

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Some metallic oxides exhibit the characteristics of both acids as well as basic oxides. They are called amphoteric oxides. They react with acid and alkalies.
Example : `Al_(2)O_(3)` reacts with acids as well as alkalies.
`Al_(2)O_(3)+6HCl+9H_(2)Orarr 2[Al(H_(2)O)_(6)]^(3+)+6Cl^(-)`
`Al_(2)O_(3)+6NaOH+3H_(2)Orarr 2Na_(3)[Al(OH)_(6)]`
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