Question

The aqueous solutions of lithium salts are poor conductors of electricity as compared to that of other alkali metals because of:

• A. high ionization energy
• B. high electronegativity
• C. lower ability of $L{i}^{+}$ ions to polarize water molecules
• D. higher degree of hydration of $L{i}^{+}$ ions

Answer 1

Answer: (D)

higher degree of hydration of $L{i}^{+}$ ions

The aqueous solutions of lithium salts are poor conductors of electricity as compared to that of other alkali metals because of higher degree of hydration of $L{i}^{+}$ ions. It decreases the mobility and leads to low conductivity.
Hence, option D is correct.