Aluminium (III) chloride forms a dimer becaus | vedclass

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(A) Aluminium chloride $(AlCl_3)$ exists as a dimer $(Al_2Cl_6)$ in the vapour state or in non-polar solvents.This occurs because the $Al$ atom in $Al

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$Al$ can show high coordination numbers.

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(A) Aluminium chloride $(AlCl_3)$ exists as a dimer $(Al_2Cl_6)$ in the vapour state or in non-polar solvents.This occurs because the $Al$ atom in $AlCl_3$ is electron-deficient,having only $6$ electrons in its valence shell.To complete its octet,$Al$ accepts a lone pair of electrons from the chlorine atom of another $AlCl_3$ molecule,forming a coordinate bond.This results in the formation of a dimer where $Al$ achieves a coordination number of $4$.

Aluminium $(III)$ chloride forms a dimer because ........

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