Hydration energy of the ion Al3+is three times greater than Ca2+. Why?
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Explanation:
Now Al3+ and Mg2+ are nearly same in size. But the charge density on Al3+ is more than Mg2+ due to +3 charge on Al compared to +2 charge on Mg. Hence, hydration energy of Al3+ is more than Mg2+.
Answered by
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The hydration energy of the ion is three times greater than due to the small size and higher charge.
- As the size of an atom decreases and its effective charge increase its hydration energy also increases because small cations are attracted by water molecules more easily than a large one.
- So, the hydration energy of the ion is three times greater than due to its small size and higher charge.
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