ReviewA - Review O rb itals Contain ed in Th at S hell 3 3s...

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1 Review Shell Orbitals Contained in ThatShell 3 2 11 s 2 s , 2 p x , 2 p y , 2 p z 3 s , 3 p x , 3 p y , 3 p z , plus five 3 d orbitals Each shell can hold 2 n 2 electrons 1 s 2 s 2 p Energy-level diagram for carbon Energy ± Aufbau (“Build Aufbau (“Build-Up”) Up”) Principle ± Pauli Exclusion Principle ± Hund’s Rule (atomic number 6) The Nature of the Chemical Bond 1 Stable molecule results at completed shell, octet (eight dots) for main-group atoms (two for hydrogen)
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2 Review ± Electronic aspect of covalent bond Octet rule (exceptions) Lewis dot structure formal charge ± Geometrical aspect of covalent bond VSEPR (Valence-shell electron-pair repulsion) ± Properties of covalent bonds Bond strength bond length polarity (electronegativity) Æ polarity of molecules the parallelogram rule
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3 Review ± Molecular Orbital (MO)Theory: electrons in atoms exist in atomic orbitals and Molecular Orbital (MO)Theory: electrons in atoms exist in atomic orbitals and electrons in molecules exist in molecular orbitals.
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This note was uploaded on 04/28/2010 for the course ORGANIC organic taught by Professor Nikles during the Spring '10 term at University of Alabama at Birmingham.

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ReviewA - Review O rb itals Contain ed in Th at S hell 3 3s...

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