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Which of the following can classified as an amphoteric oxide?(a) Iron (III) oxide(b) Zinc oxide(c) Mercury (II) oxide(d) LimeI have been asked this question during an interview.I want to ask this question from P-Block Elements in division P-Block Elements of Chemistry – Class 12

Answer» RIGHT option is (b) Zinc oxide

The best explanation: Zinc oxide is the only amphoteric oxide out of these four. On dissolution in acid like HCl, it acts as a base and forms ZNCL2 salt. On dissolving in base like NAOH, it acts an acid to FORM SODIUM zincate, Na2ZnO2.


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