Lecture 2 - I II Group III IV IV V VI VII I II Group III IV...

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IV IV V VI VI VII VII III III I II II Group Group
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IV IV V VI VI VII VII III III I II II Group Group
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1 s 2 s 2 p C 6 Z C* C* : carbon in a molecule. To achieve electronic stability C C . . . . . . . . Lewis Structure of carbon element C C . . . . . . . . . . . . H H H H H H H H C C . . . . . . . . . . . . . . H H H H O O Lewis Structures of carbon in organic molecules What are the common features? Both concern about valence e -
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1 s 2 s 2 p C 6 Z C* C* : carbon in a molecule. To achieve electronic stability C C . . . . . . . . Lewis Structure of carbon element C C . . . . . . . . . . . . H H H H H H H H C C . . . . . . . . . . . . . . H H H H O O Lewis Structures of carbon in organic molecules What are the common features?
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Which of the following is the correct Lewis Which of the following is the correct Lewis Structure for N element? Structure for N element? N N . . . . . . . . N N . . . . . . . . . . N N . . . . . . N N . . . . . . . . . . . . A A B B C C D D
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Lewis Structure of Ammonia Lewis Structure of Ammonia Nitrogen has 5 valence electrons (2 Nitrogen has 5 valence electrons (2 s s 2 2 2 p p 3 ) but forms only ) but forms only three bonds three bonds Example: NH Example: NH 3 (ammonia) (ammonia) N H H N + 3 H H
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Non-bonding Electrons Non-bonding Electrons Valence electrons not used in bonding are called Valence electrons not used in bonding are called nonbonding nonbonding electrons or electrons or lone-pair lone-pair electrons electrons Example: Nitrogen atom in ammonia (NH Example: Nitrogen atom in ammonia (NH
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This note was uploaded on 02/15/2012 for the course ORGO 101 taught by Professor Staff during the Fall '11 term at Syracuse.

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Lecture 2 - I II Group III IV IV V VI VII I II Group III IV...

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