Which one of the following alkaline earth metal has the highest ionic mobility in its aqueous solution?

Option 1 - Be2+

Option 2 - Mg2+

Option 3 - Ca2+

Option 4 - Sr2+

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Answered by

Raj Pandey | Contributor-Level 9

5 months ago

Correct Option - 1

Detailed Solution:

Size of hydrated ion $\propto$ $\frac{1}{I o n i c m o b i l i t y}$ $\frac{}{}$

Size of hydrated ions $\propto \frac{1}{I o n i c s i z e}$ $\frac{}{}$

Size of hydrated ions ; $B e^{+ 2} > M g^{+ 2} > C a^{+ 2} > S r^{+ 2}$ $^{}^{}^{}^{}$

Ionic mobility ; $B e^{+ 2} < M g^{+ 2} < C a^{+ 2} < S r^{+ 2}$

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