Lecture_22 - Today's Lecture Bonding General Concepts 13.13...

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1 1 Bonding: General Concepts Today’s Lecture 13.13 Molecular Structure: The VSEPR Model 1 VSEPR: V alence S hell E lectron P air R epulsion ± this theory/model is useful in predicting the geometries of molecule VSEPR Theory of molecules ± main postulate: ± the structure around a given atom is determined principally by minimizing electron pair repulsions ± electron pairs (bonding and nonbonding) around a 2 given atom should be positioned as far apart as possible so to minimize electron-electron repulsion ± our focus will be to look at the arrangement of electron pairs around the central atom
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2 2 Steps for Using the VSEPR Model ± draw the Lewis structure for the molecule ± determine the number of VSEPR electron pairs BONDING AND NONBONDING around the centra atom ( ) around the central atom ± multiple bonding electron pairs are counted as 1 VSEPR pair ± double bond - 1 VSEPR pair ± triple bond - 1 VSEPR pair ± arrange the VSEPR pairs around the centra atom so as to
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This note was uploaded on 06/27/2009 for the course CHEM CHEM 121 taught by Professor Peggy during the Spring '09 term at Simon Fraser.

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Lecture_22 - Today's Lecture Bonding General Concepts 13.13...

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