Question

3. Which elements of group-I have highest hydration enthalpy ? Why ?​

Answer 1

Answer:

The lithium-ion has by far the highest hydration enthalpy in Group 1 and the small fluoride ion has by far the highest hydration enthalpy in Group 7. Lithium exerts the greatest polarizing effect out of all the alkali metals on the negative ion.

Explanation:

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Answer 2

Answer:

• Lithium-ion
• Since Li+ is small in size among all alkali metals, it has high charge density and hence, the highest hydration energy of all the alkali metals.

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