In the gaseous dimeric molecule , how many Chlorine atoms serve specifically as bridging ligands bet — Chemical Bonding Chemistry Question
Question
In the gaseous dimeric molecule $Al_2Cl_6$, how many Chlorine atoms serve specifically as bridging ligands between the two Aluminum centers?
Answer: 2
💡 Solution & Explanation
The $Al_2Cl_6$ dimer consists of two $AlCl_3$ units. To achieve a stable octet, one terminal Chlorine from each monomer uses a lone pair to form a coordinate bond with the empty $3p$ orbital of the other Aluminum atom, resulting in exactly 2 bridging Chlorine atoms.
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