Question

The ionic conductance of the following cation in a given concentration is in the order:

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

Answer 1

The correct option is A $L{i}^{+}<N{a}^{+}<K^{+}<R{b}^{+}$

$L{i}^{+}$ having high solution property due to which it has low conductance.

Down the group as size increases solvation of ion decreases and hence ionic conductance increases.