CBSE Class 11-science Answered
why dows alcl3 form dimer?
Asked by Sagar krishna | 17 Mar, 2014, 05:45: PM
Expert Answer
AlCl3 is borderline for being ionic/covalent. When solid it is usually ionic. In vapor it is covalent. In this state, 3 electrons from Al are shared with 3 Cl electrons. That makes only 6 electrons. To get to the very favorable 8 electron octet, it forms Al2Cl6 and thus the extra sharing from the dimer gives the necessary octet for all atoms.
Answered by | 18 Mar, 2014, 10:24: AM
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