Bonding - Ionic Bond ing Res onan ce Struct ures VSE PR...

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Unformatted text preview: Ionic Bond ing Res onan ce Struct ures VSE PR Basi c Sha pes 3-D Not ation Hyb ridization (Lab) Mo lecular Geo me tries Oct et Rul e Polar Mo lecules Lewi s Struct ures Cov alent Bond ing Typ es of Bond s Chemical Bonding • Chemical bond : attractive force holding two or more atoms together. • Covalent bond results from sharing electrons between the atoms. Usually found between nonmetals. • Ionic bond results from the transfer of electrons from a metal to a nonmetal. • Metallic bond : attractive force holding pure metals together. Chemical Bonds, Lewis Symbols, and the Octet Rule Chemical Bonds, Lewis Symbols, and the Octet Rule Figure 8.3: Ionic Bonding Figure 8.3: Ionic Bonding Figure 8.5: Covalent Bonding Figure 8.5: Covalent Bonding Chemical Bonds Bond Type Single Double Triple # of e’s 2 4 6 Notation — = ≡ Bond order 1 2 3 Bond strength Increases from Single to Triple Bond length Decreases from Single to Triple Strengths of Covalent Bonds Strengths of Covalent Bonds Lewis Symbols Chemical Bonds, Lewis Symbols, and the Octet Rule Chemical Bonds, Lewis Symbols, and the Octet Rule The Octet Rule • All noble gases except He has an s p configuration. • Octet rule: atoms tend to gain, lose, or share electrons until they are surrounded by 8 valence electrons (4 electron pairs). • Caution : there are many exceptions to the octet rule. Chemical Bonds, Lewis Symbols, and the Octet Rule Chemical Bonds, Lewis Symbols, and the Octet Rule Bond Polarity and Electronegativity Bond Polarity and Electronegativity Electronegativity • Electronegativity: The ability of one atoms in a molecule to attract electrons to itself....
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This note was uploaded on 04/26/2008 for the course CHEM 212 taught by Professor Ng during the Fall '07 term at Winona.

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Bonding - Ionic Bond ing Res onan ce Struct ures VSE PR...

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