The correct order of electrical conductivity | vedclass

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Question

(A) The electrical conductivity of ions in an aqueous solution depends on their ionic mobility. Ionic mobility is inversely proportional to the size o

Vedclass · Accepted Answer

$Cs^{+} > K^{+} > Na^{+} > Li^{+}$

Vedclass · Answer

(A) The electrical conductivity of ions in an aqueous solution depends on their ionic mobility. Ionic mobility is inversely proportional to the size of the hydrated ion. Smaller ions have a higher charge density, which causes them to be more extensively hydrated. Therefore, the order of hydrated ionic size is $Li^{+} > Na^{+} > K^{+} > Cs^{+}$. Consequently, the order of ionic mobility and electrical conductivity is $Cs^{+} > K^{+} > Na^{+} > Li^{+}$.

The correct order of electrical conductivity of alkali metal ions in their aqueous solution for $Cs^{+}$, $K^{+}$, $Na^{+}$, and $Li^{+}$ is:

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