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midterm2 notes - Electronegativity Change in electroneg<...

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John Dalton's Postulate 1) Matter consists of indivisible atoms. 2) All the atoms of a given element are identical in mass and other properties. 3) Different elements have different types of atoms (different masses). 4) Atoms retain their identity in normal chemical reactions. 5) Molecule forms from atoms of different elements in small whole number ratios.
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Unformatted text preview: Electronegativity: Change in electroneg. < 1.2 = COVALENT Change in electroneg. >1.8 = IONIC Change in electroneg. 1.2<x<1.8 = POLAR COVALENT Coordination Number = # of pairs of unshared electrons + # of bonds to other atoms Coordination # of 4 = Tetrahedral Carbon Coordination # of 3 = Trigonal Planar Carbon Coordination # of 2 = Linear Carbon...
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This note was uploaded on 04/28/2008 for the course CHEM 203Lxg taught by Professor Mc kenna during the Fall '07 term at USC.

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