Asked by samuel
in one sentence,explain why Bf3 with incomplete octet structure is the preferred structure?
Answers
Answered by
DrBob222
Read this link and summarize. Pay particular attention to the formal charge discussion.
https://www.clutchprep.com/chemistry/practice-problems/5922/160-for-the-molecule-bf3-if-we-write-the-lewis-dot-structure-by-first-completing
https://www.clutchprep.com/chemistry/practice-problems/5922/160-for-the-molecule-bf3-if-we-write-the-lewis-dot-structure-by-first-completing
Answered by
Doc48
Boron has only 3 valence electrons.
=> B:[He]2s²2p¹ + 3F:[He]2s²3p²p²p¹
=> B:[He](sp²)¹(sp²)¹(sp²)¹ + 3F:[He]2(sp³)²(sp³)²(sp³)¹
=> BF₃:[He]2(σ∙σ∙σ)
=> Trigonal Planer Geometry with 3 covalent σ-bonds with θᵦ = 120⁰.
=> B:[He]2s²2p¹ + 3F:[He]2s²3p²p²p¹
=> B:[He](sp²)¹(sp²)¹(sp²)¹ + 3F:[He]2(sp³)²(sp³)²(sp³)¹
=> BF₃:[He]2(σ∙σ∙σ)
=> Trigonal Planer Geometry with 3 covalent σ-bonds with θᵦ = 120⁰.
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