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Account for the fact that Aluminium chlo...

Account for the fact that Aluminium chloride exists as a dimer.

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In `AlCl_(3)`. Al has only six electrons in its valance shell. Therefore, it needs two more electrons to complete its octet. To do so, it accepts a lone pair of electrons from the CC atom of another `AlCl_(3)` molecule As a result `AlCl_(3)` exist as dimer.
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