10-23-08%20-%20Lecture%2011%20-%20Chapter%202

10-23-08%20-%20Lecture%2011%20-%20Chapter%202 - Covalent...

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Covalent Bonds The majority of compounds do not form ionic bonds, but form covalent bonds Covalent bond consists of a shared electron pair Covalent bonds form between nonmetals Octet Rule: Covalent bond formation, atoms try to complete octet by sharing electron pairs
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H 2 : the simplest covalent bond The H 2 bond arises from the mutual attraction of 2 nuclei for the same electrons. Electron sharing results. H B + H A H B H A Bond is a balance of attractive and repulsive Bond is a balance of attractive and repulsive forces. forces.
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Bonding in H   2 Line between 2 atoms Line between 2 atoms represents shared represents shared electron pair, or a electron pair, or a covalent bond covalent bond Each atom “sees” 2 Each atom “sees” 2 electrons (each H has electrons (each H has configuration of a configuration of a Noble Gas (He) Noble Gas (He)
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Bond Formation A bond can result from a “head-to-head” overlap of atomic orbitals on neighboring atoms.   
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This note was uploaded on 01/04/2009 for the course CHEM 234234234 taught by Professor Johnson during the Fall '08 term at UCSD.

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10-23-08%20-%20Lecture%2011%20-%20Chapter%202 - Covalent...

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