Question

In qualitative analysis, $Cd$ is under :

• A. I group
• B. II group
• C. Ill group
• D. IV group

Answer 1

The correct option is B II group

The $2^{nd}$ analytic group of cations consists of ions that form acid-insoluble sulfides.

Cations in the $2^{nd}$ group include: $C{d}^{2+},A{s}^{5+},S{b}^{5+},S{n}^{2+},S{n}^{4+}$ and $H{g}^{2+}.P{b}^{2+}$ and others.