BF₃ and the Incomplete Octet: A Bonding Exception

The video tutorial explains how boron trifluoride can satisfy its octet by utilizing a lone electron pair from fluorine. This results in the formation of three resonating structures, which are unstable due to the formal charges on boron and fluorine. The shorter bond length supports these structures. Additionally, the reaction of boron trifluoride with ammonia is better explained using the Levy structure, where boron has six valence electrons, leading to four resonating structures.

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