Question

In which following hydration energy is less than $M{g}^{2+}$

• A. $N{a}^{+}$
• B. $A{l}^{+3}$
• C. $B{e}^{+2}$
• D. $C{r}^{3+}$

Answer 1

Answer: (A)

$N{a}^{+}$

Hydration energy depends on the charge of ion and ionic radius. Higher the charge, greater the hydration energy. On the other hand, smaller the size, greater the hydration energy.

Based on this $N{a}^{+}$ is having lower hydration energy than $M{g}^{+}$