What element forms an amphoteric compound?

Amphoteric compounds (amphoteric oxides and hydroxides) are formed with amphoteric elements, some of which are: Ti (4-valent), Cr (3-valent), Fe (3-valent), Al (3-valent), Pb (2 -valent) Zn (2-valent), Be (2-valent), Sn (2-valent).



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