In the vapor state, Aluminium chloride () exists as a dimer (). What is the hybridization of the Aluminium atom in this dimeric structure?

Question

In the vapor state, Aluminium chloride ($AlCl_3$) exists as a dimer ($Al_2Cl_6$). What is the hybridization of the Aluminium atom in this dimeric structure?

Prashant Kotian · Accepted Answer

Correct answer: B. In the dimer, each Aluminium atom forms three single covalent bonds with Chlorine and accepts one coordinate bond from a bridging Chlorine atom to complete its octet. This results in 4 electron domains and hybridization.

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