Heat of Hydration trend in p-block elements?

Answer 1

Larger the atomic size lesser the hydration energy or the energy decreases. As the atomic sizes decrease from left to right in a Periodic Table therefore the heat of hydration increases from left to right. Same is the case with p-block elements .

Answer 2

In general, as we move down a group in the p-block elements, the heat of hydration decreases. This is because the size of the atoms increases down the group, leading to weaker attractions between the water molecules and the ion. Additionally, as we move across a period, the heat of hydration generally increases due to the increasing charge density of the ions, resulting in stronger interactions with water molecules.