Which of the following pairs of cations can be separated by using an `NH_(3)` solution?

Options

A. `Fe^(3+) and Al^(3+)`
B. `Al^(3+) and Zn^(2+)`
C. `Sn^(2+) and Pb^(2+)`
D. `Cu^(2+) and Cd^(2+)`

Answer

B