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I believe that all group 13 elements are electron deficient and act like Lewis acids. Not entirely sure on the second question but I think electron deficient just means the atom doesn't have enough electrons to fill an octet, but compounds with boron and aluminum are exceptions to the octet rule.
ALee_3G wrote:Are Group 13 elements always electron deficient or does it depend? Also, does electron deficient (the way that Dr. Lavelle uses it) mean that the atom/element can be without an octet?
Some of the Group 13 elements can sometimes exist in compounds where they have 8 valence electrons, such as BF3NH3, meaning they are not necessarily always electron deficient.
I believe that yes, electron deficient means that the atom/element can be without an octet as Dr. Lavelle uses it.
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