Anhydrous $ALCl_3$ is covalent however,when it is dissolved in water hydrared ionic species are formed. This transformation is owing to

  • A

    the trivalent state of $Al$

  • B

    the large hydration energy of $Al^{3+}$

  • C

    the low hydration energy of $Al^{3+}$

  • D

    the polar nature of water

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