Question

Sulphides of which of the following metal ions do not form black precipitate?

• A. $H{g}^{2+}$ and $C{o}^{2+}$
• B. $C{d}^{2+}$ and $S{b}^{3+}$
• C. $N{i}^{2+}$ and $A{g}^{+}$
• D. $C{o}^{2+}$ and $C{u}^{2+}$

Answer 1

Answer: (B)

Correct answer is (b) $C{d}^{2+}$ and $S{b}^{3+}$