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How To Draw Lewis Structures:
Here are some rules to know when drawing lewis structures as it relates to Organic Chemistry. 1. Hydrogen can only form 1 bond 2. Boron and Aluminum usually forms 3 bonds as a neutral atom. 3. Carbon prefers to have 4 bonds. 4. Nitrogen prefers to have 3 bonds. 5. Oxygen usually forms 2 bonds as a neutral atom 6. Halogens like Fluorine, Chlorine, Bromine, and Iodine typically have 1 bond. These rules generally work when the element is neutral - that is, when they have no formal charge. In the case of Nitrogen, it typically has 3 bonds as a neutral atom (NH3). When it has 4 bonds, it will have a positive formal charge (NH4+). When it has 2 bonds, it will have a negative formal charge (NH2-). This also applies to other elements like Oxygen. Oxygen likes to have 2 bonds (H2O) as a neutral atom. When it has an additional bond (3 bonds), it will have a positive formal charge (H3O+). When it has 1 bond, it will have a negative formal charge (OH-). Here are some additional videos that explains how to draw lewis structures. How To Draw Lewis Structures of Simple Compounds: www.youtube.com/watch?v=NFZtjSeT3XE How To Draw Lewis Structures - 2 Hour Review: www.youtube.com/watch?v=PeY_sihSh8E Condensed Structures to Skeletal Structures: www.youtube.com/watch?v=HRkvjKHFNDA Video Playlists and Final Exam Videos: www.video-tutor.net/ |
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