Which of the following has maximum hydration energy?

Question

Which of the following has maximum hydration energy? (A)  Na+  (B)  Li+  (C)  H+  (D)  Ca2+

Tardigrade Admin · Accepted Answer

Hydration energy is the amount of energy released upon solvation by water.
Hydration energy depends on the charge of the ion and the ionic radius. Higher the charge and smaller the size, greater the hydration energy.

H^{+}

has the smallest size and hence has the maximum hydration energy among the four.

Q. Which of the following has maximum hydration energy?

$N a^{+}$

$L i^{+}$

$H^{+}$

$C a^{2 +}$

Q. Which of the following has maximum hydration energy?

Na+

Li+

H+

Ca2+

Hydration energy is the amount of energy released upon solvation by water. Hydration energy depends on the charge of the ion and the ionic radius. Higher the charge and smaller the size, greater the hydration energy. H+has the smallest size and hence has the maximum hydration energy among the four.

$N a^{+}$

$L i^{+}$

$H^{+}$

$C a^{2 +}$