Chemistry - Salt Analysis Question with Solution | TestHub

In qualitative analysis, basic radicals are systematically separated into groups. Group IV cations are precipitated as sulfides in the presence of ammonium chloride and ammonium hydroxide. This group includes ${\mathrm{Zn}}^{2+}$, ${\mathrm{Co}}^{2+}$, ${\mathrm{Mn}}^{2+}$, and ${\mathrm{Ni}}^{2+}$.

The final answer is $\boxed{B}$