Lewis Structures - Distrubute the remaining (nonbonding)...

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Drawing a Lewis Structure for a Molecule: 1. If there are more than 2 total atoms in the molecule, place the atom with the lowest electronegativity (EN) in the center of the molecule. That is, the atom that needs the most electrons to obtain an octet around it should be placed in the center of the molecule. 2. Determine the total number of valence electrons are available. You can merely add up the group numbers of each atom within the molecule. 3. Draw single bonds from each surrounding atom to the central atom, and subtract two valence electrons per single bond from the total number of valence electrons determined above. 4.
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Unformatted text preview: Distrubute the remaining (nonbonding) electrons as lone pairs around the surrounding atoms (the more electronegative atoms) to give them octets. If any electrons remain, place them around the central atom. 5. If central atom has fewer than 8 electrons around it (either in lone pairs or bonding pairs), move one or more of the lone pairs from the terminal atoms to form a multiple bond between that terminal atom and the central atom, until an octet (8 electrons) around the central atom is obtained. We will cover multiple bonds next, as well as resonance structures, formal charges, and exceptions to the octet rule……...
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This note was uploaded on 07/15/2011 for the course CHEM 2045 taught by Professor Gower during the Spring '11 term at University of Florida.

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