Description : Which among the following metals provides amphoteric oxide? (1) Sodium (2) Silver (3) Aluminium (4) Calcium
Last Answer : (3) Aluminium Explanation: In chemistry, an amphoteric species is a molecule or ion that can react as an acid as well as a base. Many metals (such as zinc, tin, lead, aluminium, and ... and proteins, which have amine and carboxylic acid groups, and selfionizable compounds such as water and ammonia.