Which is not amphoteric?

Options

A. `Al^(3+)`
B. `Cr^(3+)`
C. `Fe^(3+)`
D. `Zn^(2+)`

Answer

c

Explanation

`Al^(3+)`, `Cr^(3+)` and `Zn^(2+)` are amphoteric i.e., `Al_2O_3`,`Cr_2O_3` and ZnO dissolve both in acids and alkalies. `Fe^(3+)` is distinctly basic. `Fe_2O_3` dissolves only in acids.