logging in or signing up c115c905 Lindon Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 794 Category: Entertainment License: All Rights Reserved Like it (1) Dislike it (0) Added: October 13, 2007 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Chapter 9: Chapter 9 Ionic and Covalent BondingIonic Bonding: Ionic Bonding Electrostatic attraction of ions of opposite chargeEnergetics of Ionic Bonding: Energetics of Ionic BondingIonic Radii: Ionic RadiiComparison of Atomic and Ionic Radii: Comparison of Atomic and Ionic RadiiIonic Radii: Ionic RadiiTransition Metals Ions: Transition Metals Ions Cr+3 Fe+2 Co+2 Cu+2 Mn+2 Fe+3 Ni+2 Zn+2Shell Model of the Atom : Shell Model of the Atom G.N.Lewis 1875-1946 AmericanChemist Lewis Symbol valence shell electrons = Group A # Molecular Substances: Molecular Substances Iodoform Carbon tetrachlorideLewis Symbol: Lewis Symbol Sulfur => S Group VIA 6 valence electron . : S : . Lewis Electron Dot Symbols: Lewis Electron Dot SymbolsLewis Structures: Lewis Structures combinations of Lewis symbols which represent possible bonding Octet Rule In compound formation an atom gains or loses electrons, or shares pairs of electrons, until its valence shell has eight electrons.Covalent Bonding: Covalent Bonding sharing of electrons H:H H-HPotential Energy Curve for H2: Potential Energy Curve for H2Lewis Structures: Lewis Structures CH4 methaneLewis Structures: Lewis Structures C2H6 ethaneMultiple Covalent Bonds: Multiple Covalent Bonds double bond => 2 pairs shared triple bond => 3 pairs shared normally occurs between: C atoms; N atoms; O atoms; a C atom and a N, O or S atom a N atom and a O or S atom a S atom and an O atomMultiple Covalent Bonds: Multiple Covalent BondsLewis Structures: Lewis Structures CO2 carbon dioxide .. .. : O :: C :: O : Lewis Structures: Lewis Structures CO carbon monoxide : C ::: O :Exceptions to Octet Rule: Exceptions to Octet Rule NO nitric oxide .. .. .N :: O:Exceptions to Octet Rule: Exceptions to Octet Rule expanded octet PF5 .. : F : .. .. .. : F . P . F : .. .. .. .. : F : : F : .. .. Exceptions to Octet Rule: Exceptions to Octet Rule SF6 .. : F : .. .. .. : F . . F : .. .. S .. .. : F . . F : .. .. .. : F : .. Delocalized Bonding in Sodium Metal: Delocalized Bonding in Sodium MetalLinus Pauling: Linus Pauling 1901–94 American chemist One of the few recipients of two Nobel prizes. His paper “The Nature of the Chemical Bond and the Structure of Molecules and Crystals” won him the 1954 Nobel Prize in chemistry. Won the peace prize in 1962. Electronegativity: Electronegativity Pauling Scale relative attraction of an atom for electrons, its own and those of other atoms same trends as ionization energy, increases from lower left corner to the upper right corner fluorine: E.N. = 4.0Electronegativities of the Elements: Electronegativities of the ElementsCovalent Bond Properties: Covalent Bond Properties electronegativity nonpolar bonds => diff. EN = 0 polar bonds => diff. EN > 0 ionic bonds => diff. EN > 1.5 Slide30: Compare O-O and O=O. Is O=O expected to be stronger, weaker, or the same strength? Slide31: Is O=O expected to be longer, shorter, or the same length? You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
c115c905 Lindon Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 794 Category: Entertainment License: All Rights Reserved Like it (1) Dislike it (0) Added: October 13, 2007 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Chapter 9: Chapter 9 Ionic and Covalent BondingIonic Bonding: Ionic Bonding Electrostatic attraction of ions of opposite chargeEnergetics of Ionic Bonding: Energetics of Ionic BondingIonic Radii: Ionic RadiiComparison of Atomic and Ionic Radii: Comparison of Atomic and Ionic RadiiIonic Radii: Ionic RadiiTransition Metals Ions: Transition Metals Ions Cr+3 Fe+2 Co+2 Cu+2 Mn+2 Fe+3 Ni+2 Zn+2Shell Model of the Atom : Shell Model of the Atom G.N.Lewis 1875-1946 AmericanChemist Lewis Symbol valence shell electrons = Group A # Molecular Substances: Molecular Substances Iodoform Carbon tetrachlorideLewis Symbol: Lewis Symbol Sulfur => S Group VIA 6 valence electron . : S : . Lewis Electron Dot Symbols: Lewis Electron Dot SymbolsLewis Structures: Lewis Structures combinations of Lewis symbols which represent possible bonding Octet Rule In compound formation an atom gains or loses electrons, or shares pairs of electrons, until its valence shell has eight electrons.Covalent Bonding: Covalent Bonding sharing of electrons H:H H-HPotential Energy Curve for H2: Potential Energy Curve for H2Lewis Structures: Lewis Structures CH4 methaneLewis Structures: Lewis Structures C2H6 ethaneMultiple Covalent Bonds: Multiple Covalent Bonds double bond => 2 pairs shared triple bond => 3 pairs shared normally occurs between: C atoms; N atoms; O atoms; a C atom and a N, O or S atom a N atom and a O or S atom a S atom and an O atomMultiple Covalent Bonds: Multiple Covalent BondsLewis Structures: Lewis Structures CO2 carbon dioxide .. .. : O :: C :: O : Lewis Structures: Lewis Structures CO carbon monoxide : C ::: O :Exceptions to Octet Rule: Exceptions to Octet Rule NO nitric oxide .. .. .N :: O:Exceptions to Octet Rule: Exceptions to Octet Rule expanded octet PF5 .. : F : .. .. .. : F . P . F : .. .. .. .. : F : : F : .. .. Exceptions to Octet Rule: Exceptions to Octet Rule SF6 .. : F : .. .. .. : F . . F : .. .. S .. .. : F . . F : .. .. .. : F : .. Delocalized Bonding in Sodium Metal: Delocalized Bonding in Sodium MetalLinus Pauling: Linus Pauling 1901–94 American chemist One of the few recipients of two Nobel prizes. His paper “The Nature of the Chemical Bond and the Structure of Molecules and Crystals” won him the 1954 Nobel Prize in chemistry. Won the peace prize in 1962. Electronegativity: Electronegativity Pauling Scale relative attraction of an atom for electrons, its own and those of other atoms same trends as ionization energy, increases from lower left corner to the upper right corner fluorine: E.N. = 4.0Electronegativities of the Elements: Electronegativities of the ElementsCovalent Bond Properties: Covalent Bond Properties electronegativity nonpolar bonds => diff. EN = 0 polar bonds => diff. EN > 0 ionic bonds => diff. EN > 1.5 Slide30: Compare O-O and O=O. Is O=O expected to be stronger, weaker, or the same strength? Slide31: Is O=O expected to be longer, shorter, or the same length?