Chapter 8 (Advanced Theories of Covalent Bonding) notes - Chapter 8(Advanced Theories of Covalent Bonding notes Sigma Bonds Strong(overlap between

Chapter 8 (Advanced Theories of Covalent Bonding)...

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Chapter 8: (Advanced Theories of Covalent Bonding) notes Sigma Bonds: Strong ((overlap between the atoms) is a very short bond) -Sigma bonds are the main bonds (singular) -Sigma bonds overlap Pi Bonds: Weak -Pi bonds are for second and third bonds -Pi bonds are singular (no overlap) Section 8-1: Valence Bond Theory Valence bond theory: A covalent bond as the overlap of half-filled atomic orbitals that yield a pair of electrons shared between the two bonded atoms -A covalent bond results when two conditions are met: (1) an orbital on one atom overlaps an orbital on a second atom and (2) the single electrons in each orbital combine to form an electron pair. Section 8-2: Hybrid Atomic Orbitals -Hybridization: Is the process of combining the wave functions for atomic orbitals. -Hybrid orbitals: Are the new orbitals that result from hybridization -The following ideas are important in understanding hybridization: 1. Hybrid orbitals do not exist in isolated atoms. They are formed only in covalently bonded

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