Question

The hydration energy of `Mg^(+2)` is greater than that of
A. `Al^(3+)`
B. `Na^(+)`
C. `Be^(2+)`
D. `Li^+`

Answer 1

Correct Answer - B
the hydration energy depends upon the size of the ion. Small ions have large hydration energies because, they can be surrounded by greater no. of water molecules due to their large positive charge densities.