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Anhydrous AlCI(3) is covalent in nature ...

Anhydrous `AlCI_(3)` is covalent in nature but hydrated `AlCl_(3)` is ionic. Explain.

Text Solution

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When anhydrous `AlCl_(3)` is hydrated, the hydration energy released is sufficient to overcome the ionisation enthalpy of Al. Thus, hydrated `AlCl_(3)` will be ionic compound.
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