Drawing the Lewis Structure for BF_{3}
Viewing Notes:
 The BF_{3} Lewis structure is similar to BCl_{3} and BBr_{3} since Cl and Br are in Group 7 and have 7 valence electrons.
 Boron (B) doesn't need 8 valence electrons to have an octet (Boron often only needs 6).
 If you're not sure you have the best Lewis structure for BF_{3} you can calculate the formal charges. You'll find the B in BF_{3} only has 6 valence electrons.
 For the BF_{3} Lewis structure there are a total of 24 valence electrons available.

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Frequently Tested Lewis Structures
Basic
CH_{4}, NH_{3}, C_{2}H_{4}, O_{2}, N_{2}
Intermediate
O_{3}, BBr_{3}, I_{3}^{}, BrF_{5}, NO
Advanced
SO_{3}, H_{2}SO_{4}, OCN^{}, XeO_{3}, ClO_{4}^{}

