AIPMT PRELIMS2006Chemistry-Solutions

AIPMT PRELIMS 2006 Chemistry Ionic Mobility MCQ Question

Type: MCQ-conceptual-Medium-Class 12

The correct order of the mobility of the alkali metal ions in aqueous solution is :

A

Li⁺ > Na⁺ > K⁺ > Rb⁺

B

Na⁺ > K⁺ > Rb⁺ > Li⁺

C

Na⁺ > K⁺ > Li⁺ > Rb⁺

D

Li⁺ > K⁺ > Na⁺ > Rb⁺

Correct Answer

Option D

Detailed Explanation

In aqueous solution, the mobility of alkali metal ions is influenced by their hydration. Li⁺, being the smallest, is most heavily hydrated, reducing its mobility compared to larger ions like Na⁺ and K⁺.

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