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QUESTION
What is the exception to the octet rule with aluminum?
In some of its , aluminum violates the by having only six .
For example, aluminum chloride, AlCl₃, has only six around the Al atom.
However, AlCl₃ exists only at high temperatures. At ordinary temperatures, two molecules of AlCl₃ combine to form Al₂Cl₆. In this structure, both Al atoms do satisfy the octet rule.
