Question

Which of the following is the most stable?

• A. $P{b}^{2+}$
• B. $G{e}^{2+}$
• C. $S{i}^{2+}$
• D. $S{n}^{2+}$

Answer 1

The correct option is A $P{b}^{2+}$

Due to inert pair of effect, stability of +2 oxidation state increases down the group, whereas, that of +4 oxidation state decreases down the group in carbon family.
Hence, the correct answer is the option (a).