Ch_322a_1.05

Ch_322a_1.05 - Resonance Structures carbonate anion CO 3 2-...

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Unformatted text preview: Resonance Structures carbonate anion CO 3 2- 24 valence electrons Lewis Structures of the Carbonate Ion C O O O : : : : : : : : I C O O O : : : : : : II : : C O O O : : : : : : : : III three equivalent Lewis structures These structures are interchangeable by moving pairs of electrons. C O O O : : : : : : : : I the octet rule must be applied becomes C O O O : : : : : : II : : formal charges automatically follow Structures that are interchangeable by moving pairs of electrons are called resonance structures. Lewis structures I, II and III are the resonance structures of the carbonate ion. C O O O : : : : : : : : I C O O O : : : : : : II : : C O O O : : : : : : : : III The double-headed arrow is specifically used to indicate resonance structures that contribute to the hybrid. The real electronic structure of the carbonate anion is a hybrid of the three resonance structures. C O O O !" !" !" hybrid there are three equivalent bonds in the carbonate anion Each carbon-oxygen bond is 1 and 1/3 bonds....
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This note was uploaded on 07/22/2009 for the course CHEM 322AL taught by Professor Jung during the Summer '07 term at USC.

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Ch_322a_1.05 - Resonance Structures carbonate anion CO 3 2-...

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