The ionic mobility of alkali metal ions in aq | vedclass

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(D) In aqueous solution,alkali metal ions are hydrated. The extent of hydration is inversely proportional to the ionic size. Smaller ions have higher

Vedclass · Accepted Answer

$Rb^{+}$

Vedclass · Answer

(D) In aqueous solution,alkali metal ions are hydrated. The extent of hydration is inversely proportional to the ionic size. Smaller ions have higher charge density and thus get more hydrated,resulting in a larger hydrated radius.Since ionic mobility is inversely proportional to the size of the hydrated ion,the hydrated radius order is $Li^{+} > Na^{+} > K^{+} > Rb^{+}$.Therefore,the ionic mobility order is $Li^{+} Thus,the ionic mobility is maximum for $Rb^{+}$.

List-$I$ (Alloy)	List-$II$ (Use)
$A$. $Li-Pb$	$I$. In aircraft construction
$B$. $Be-Cu$	$II$. To make bearings for motor engines
$C$. $Mg-Al$	$III$. To make tetraethyl lead
$D$. $Na-Pb$	$IV$. To make high strength springs

The ionic mobility of alkali metal ions in aqueous solution is maximum for

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Which of the following releases brown gas on heating?

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List-$I$ (Alloy) List-$II$ (Use)
$A$. $Li-Pb$ $I$. In aircraft construction
$B$. $Be-Cu$ $II$. To make bearings for motor engines
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Which one of the following alkali metals gives hydrated salts?

Compound $D$ is
$Na$ $\xrightarrow{H_2O} (A)$ $\xrightarrow{CO_2} (B)$ $\xrightarrow[Excess]{SO_2} (C)$ $\xrightarrow[In\ excess\ SO_2]{Evaporation} (D)$ $\xrightarrow{\Delta} (E) + f_{(g)}$
$(E) \xrightarrow{\Delta} (G) + H$

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