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  • Which among the following ions have highest mobility in aqueous solution?Option: 1 <img alt="\mathrm{Be}^{2+}" src="https://entrancecorner.oncodecogs

Which among the following ions have highest mobility in aqueous solution?

Option: 1

\mathrm{Be}^{2+}


Option: 2

\mathrm{Ba}^{2+}


Option: 3

\mathrm{Mg}^{2+}


Option: 4

\mathrm{Ca}^{2+}


Answers (1)

best_answer

As we move down the group, the size of metal ion increases so hydration energy decreases. Since \mathrm{Ba}^{2+} is the heaviest ion, it is least hydrated.
As a result, its size of hydrated ion becomes lesser than any other hydrated alkaline earth metal cation and hence has the highest ionic mobility.

Posted by

Divya Prakash Singh

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