The hydration energy of `Mg^(2+)` ion is

Options

A. more than that of `Mg^(3+)` ion
B. more than that of `Na^(+)` ion
C. more than that of `Al^(3+)` ion
D. more than that of `Be^(2+)` ion

Answer

B

Explanation

Hydration energy `prop (1)/("size of the ion")`
`Mg^(2+)` ion is smaller in size than Nation while it is bigger in size than `Al^(3+), Be^(2+)` and `Mg^(3+)` ions.