Classification of Elements Part 1

These elements are called amphoteric which reacts with both acid and base.
(1) Zn
(2) Be
(3) Al
(4) B
(5) Cr
(6) Ga
(7) Pb
(8) Sn
Here Zn,Be,Al,Pb and Sn are mostly amphoteric.
B,Cr and Ga are less amphoteric.