Question

What do we call the energy evolved when a gaseous metal cation is hydrated by bulk water?

Answer 1

So far as I know, `"hydration energy"`...........

Explanation:

So far as I know, `"hydration energy"` is the energy associated with the formation of one mole of aquated ions from one mole of gaeous cations (or anions).......

`M^(n+)(g) + H_2O(l) rarr [M(OH_2)_(4-6)]^(n+)+Delta`....

Where `Delta_"rxn"-="hydration energy"`

This is certainly measurable for a given series of CATIONS (if we keep the anion constant....) and hydration energy increase by an inverse proportion to the size of the ion.....