From which of the following is the hydration | vedclass

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(A) The hydration energy of an ion is directly proportional to its charge density,which is defined as the ratio of charge to size $(q/r)$.For the give

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$Na^{+}$

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(A) The hydration energy of an ion is directly proportional to its charge density,which is defined as the ratio of charge to size $(q/r)$.For the given ions,the hydration energy increases as the charge increases and the ionic radius decreases.Comparing the ions: $Na^{+}$ ($+1$ charge),$Mg^{2+}$ ($+2$ charge),$Be^{2+}$ ($+2$ charge,smaller radius than $Mg^{2+}$),$Al^{3+}$ ($+3$ charge),and $Cr^{3+}$ ($+3$ charge).Since $Na^{+}$ has a lower charge $(+1)$ than $Mg^{2+}$ $(+2)$ and a larger ionic radius,the hydration energy of $Mg^{2+}$ is larger than that of $Na^{+}$.

List-$I$	List-$II$
$I$. $CaSO_4 \cdot 2H_2O$	$A$. Knee cement
$II$. $CaSO_4 \cdot 0.5H_2O$	$B$. Gypsum
$III$. $CaSO_4$	$C$. Plaster of Paris
	$D$. Dead burnt plaster

From which of the following is the hydration energy of $Mg^{2+}$ larger?

Similar Questions

Identify the incorrect reaction.

Gypsum $CaSO_4 \cdot 2H_2O$ on heating to about $120 \, ^oC$ forms a compound which has the chemical composition represented by

Match the following:
List-$I$ List-$II$
$I$. $CaSO_4 \cdot 2H_2O$ $A$. Knee cement
$II$. $CaSO_4 \cdot 0.5H_2O$ $B$. Gypsum
$III$. $CaSO_4$ $C$. Plaster of Paris
$D$. Dead burnt plaster

Which one contains both $Ca$ and $Mg$?

Chemical $A$ is used for the removal of temporary hardness of water. Compound $A$ reacts with $Na_2CO_3$ to produce caustic soda. When $CO_2$ gas is passed through $A$,it turns milky. What is the chemical formula of $A$?

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