Among Boron family, the element that forms an amphoteric oxide and amphoteric hydroxide is:

Q. An element of group 2 forms a covalent oxide which is amphoteric in nature and dissolves in water to give an amphoteric hydroxide. Identify the element and write chemical reactions of the hydroxide of the element with an alkali and an acid.

Q. Identify the element that forms amphoteric oxide

Q.

Among the chalcogens, the element that forms an amphoteric dioxide is: