Chapter 12 Chemical Bonding 1 2 Types of Chemical Bonds Ionic Covalent Polar Covalent Ionic Bonding a b 3 Covalent Bonding a b c 4 Electron Configurations of Ions Ion Sizes and Crystal Lattices Lewis Structures Bond Order and Resonance Exceptions to the Octet Rule Molecular Geometries and VSEPR Theory Electronegativities of the Elements http chemistry allinfoabout com feature s electronegativity html Example 1 Write the electron configurations for the Following main group ions K P3 Al3 I Example 2 Which has stronger ionic bonds NaCl or MgS Why Rules for Drawing Lewis Structures http homepage smc edu merlic jennif er Chem10 handouts Lewis Structures C H10 pdf Example 3 Draw Lewis Structures for each of the following molecules or ions NH3 CH4 NO3 F2 C2H6 CN O2 C2H4 H2O2 N2 C2H2 C6H6 cyclic Molecular Geometries Polarity http homepage smc edu merlic jennif er Chem10 handouts Geometries CH10 pd f Example 4 Predict the molecular geometry for each of the following molecules or ions and state which are polar and which are nonpolar NH3 CH4 NO3 F2 CH3F CN CO2 CH2F2 H2S
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