scotty 20 - ChemistryNotes...

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Chemistry Notes Chapter 2: Polar Covalent Bonds; Acids and Bases Polar Covalent Bond      –  bond b/w atoms of different electronegativities. o normal covalent = share electrons equally o polar covalent = one atom tends to pull more electrons towards itself so its  more EN. (FON) Electronegativity (EN)      – a measure of the ability of an atom to pull the bonding  electrons towards itself. A difference in EN brings about polarity (increased as  you go to the right and up the periodic table). o Ionic bond      – EN > 2 o Covalent bond      - EN < .5 o Polar covalent bond      - EN = .5-2 Polarity      – indicated using partial charges Inductive effect      – withdrawal or donation of electrons through a sigma bond due  to difference in EN. (metals donate, nonmetals withdraw) Dipole moment      – measured the net molecule polarity. The larger the value, the 
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This note was uploaded on 04/01/2011 for the course CHEMISTRY 2400 taught by Professor Staff during the Fall '10 term at Georgia State University, Atlanta.

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scotty 20 - ChemistryNotes...

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