Question

Which of the following ions in aqueous solution is the best conductor of electricity?

• A. $L{i}^{+}$
• B. $N{a}^{+}$
• C. $M{g}^{2+}$
• D. $C{s}^{+}$

Answer 1

Answer: (D)

Group I are the alkali metal ions and the metallic character increases down the group so the Cs ion is the best conductor of electricity among them.