Question

The ionic conductance of which of the following is the highest?

• A. $L{i}_{\left(aq\right)}^{+}$
• B. $N{a}_{\left(aq\right)}^{+}$
• C. $K_{\left(aq\right)}^{+}$
• D. $C{s}_{\left(aq\right)}^{+}$

Answer 1

The correct option is D $C{s}_{\left(aq\right)}^{+}$

Greater the extent of hydration, smaller the ionicmobility and conductance.
$L{i}^{+}$ is more hydrated than others.
$C{s}^{+}$ almost unhydrated

Increasing order of conductivity is $C{s}^{+}>K^{+}>N{a}^{+}>L{i}^{+}$