Question

The ionic mobility of alkali metal ions in aqueous solution is maximum for :

• A. $K^{+}$
• B. $R{b}^{+}$
• C. $L{i}^{+}$
• D. $N{a}^{+}$

Answer 1

Answer: (B)

$L{i}^{+}$ is having largest hydrated ionic size while $R{b}^{+}$ is having smallest. Smaller the size, greater the mobility.