Chapter 12 – Chemical BondingElectronegativities of the ElementsExample 1Example 2Rules for Drawing Lewis StructuresExample 3Molecular Geometries & PolarityExample 4Chapter 12 – Chemical Bonding1. Types of Chemical Bonds: Ionic, Covalent, Polar Covalent2. Ionic Bondinga. Electron Configurations of Ionsb. Ion Sizes and Crystal Lattices3. Covalent Bondinga. Lewis Structuresb. Bond Order and Resonancec. Exceptions to the Octet Rule4. Molecular Geometries and VSEPR TheoryElectronegativities of the Elementshttp://chemistry.allinfoabout.com/features/electronegativity.htmlExample 1Write the electron configurations for the Following main group ions:K+P3–Al3+I–Example 2Which has stronger ionic bonds, NaCl orMgS? Why?Rules for Drawing Lewis Structureshttp://homepage.smc.edu/merlic_jennifer/Chem10/handouts/Lewis_Structures_CH10.pdfExample 3Draw Lewis Structures for each of thefollowing molecules or ions:NH3CH4NO3–F2C2H6CN –O2C2H4H2O2N2C2H2C6H6 (cyclic)Molecular Geometries & Polarityhttp://homepage.smc.edu/merlic_jennifer/Chem10/handouts/Geometries_CH10.pdfExample 4Predict the molecular geometry for eachof the following molecules or ions and state which are polar and which are nonpolar:NH3CH4NO3–F2CH3F CN
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