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Unformatted text preview: N = number of electrons needed to achieve a noble gas configuration. – N usually has a value of 8 for representative elements. – N has a value of 2 for H atoms. A = number of electrons available in valence shells of the atoms. – A is equal to the periodic group number for each element. – A is equal to 8 for the noble gases. S = number of electrons shared in bonds. A-S = number of electrons in unshared, lone , pairs. Lewis Formulas for Molecules and Polyatomic Ions First, we explore Lewis dot formulas of homonuclear diatomic molecules. – Two atoms of the same element....
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This note was uploaded on 11/25/2011 for the course CHEM 1211 taught by Professor Atwood during the Fall '07 term at University of Georgia Athens.
- Fall '07