Question

Hydration energy of $M{g}^{2+}$ is more than $L{i}^{+}$.
If true enter 1, else enter 0.

Answer 1

The heat energy released when new bonds are made between the ions and water moleculesis known as the hydration enthalpy of the ion. The hydration enthalpy is the enthalpy change when 1 mole of gaseous ions dissolve in sufficient water to give an infinitely dilute solution. Hydration enthalpies are always negative. Larger the atomic size lesser the hydration energy or the energy decreases.

The size of $L{i}^{+}$ greater than $M{g}^{2+}$.So, the hydration energy of $M{g}^{2+}$ is greater than $L{i}^{+}$.So, the correct order of hydration energy is $M{g}^{2+}>L{i}^{+}$.