Why transition elements have high hydration energy?

The transition metal ions are small in size and have high charge . Due to this size/charge ratio is high , hence hydration energy also high.. read more

The transition metal ions are small in size and have high charge . Due to this size/charge ratio is high , hence hydration energy also high.. In hydrated ion of a transition element not only an ion dipole bond possible but also there is tendency toward coordinate bond formation to fill incomplete stable orbitals of the central ion. read more

Smaller the cation, greater is the degree of hydration.Alkali metals easily lose 1 electron therefore have high values of "oxidising potential" which means high tendency to get oxidised hence powerful reducing nature in aqueous medium. It is a fact that Li+ has greatest reducing nature in aqueous medium due to maximum hydration energy for Li+ ion. read more