$A l X_{3}$ (X = Cl, Br) exists as dimer and retains dimer formula in non-polar solvents like ether and benzene.

True

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False

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Solution

The correct option is A True
In the liquid state aluminium trichloride exists as the dimer with tetracoordinate aluminium. This change in structure is related to the lower density of liquid phase. These dimers are also found in the vapor phase. At higher temperature dimers dissociate into trigonal planar. The melt conducts electricity poorly.

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AlX3 (X = Cl, Br) exists as dimer and retains dimer formula in non-polar solvents like ether and benzene.

$A l X_{3}$ (X = Cl, Br) exists as dimer and retains dimer formula in non-polar solvents like ether and benzene.