Classification of Elements Part 1

An amphoteric compound is a molecule or ion that can react with both as an acid or as a base.
BeO=‌ Amphoteric ‌
BaO=‌ Basic ‌
Be(OH)2=‌ Amphoteric ‌
Sr(OH)2=‌ Basic ‌
Both beryllium compound BeO and Be(OH)2 are amphoteric in nature while compound BaO and Sr(OH)2 are basic in nature, they form alkaline solution in H2O.