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Resonance and Lewis Structures.docx

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CHEM 1040
Johnathan Vandersteen

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ResonanceSome structures do not have a unique Lewis structureLike in nitrogen trioxide the double bond between nitrogen and oxygen could be on anywhereThe actual structure is a comprised structure where the pi bond keeps moving across all the sigma bondsWhenever a structure exhibits resonance it will always become more stableFor resonance to occur there must be a pi bond in the structureFormal ChargesRepresents the number of electrons that an atom has in structure as compared to what it started withFormalChargeelectronsgroundstatefreeelectrons1foreachbond Eg Whats formal charge on ammonium 52 30Lewis StructuresUseful in explaining the bonding s
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