'Valence bond theory' diaporamas de présentation

Chapter 10

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VSEPR Theory

VSEPR Theory. VSEPR Theory. Lewis structures are valuable because?? But what about the 3-D shape of molecules? They have 3-D shapes, but is it important? What about enzymes: is their 3-D shape important? What about DNA: is their 3-D shape important?. VSEPR Theory.

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Valence bond theory (VBT)

Valence bond theory (VBT) . There are theories as to why the links in the complexes and transition elements, : including Valence Bond Theory (V B T) We will study the hybridization. 1-Type of hybrid orbital's (sp 3 ): A) I nterdependence in methane :

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Valence Bond Theory and Molecular Orbital Theory

Valence Bond Theory and Molecular Orbital Theory. Shapes of Atomic Orbitals for Electrons. Four different kinds of orbitals for electrons denoted s , p , d , and f s and p orbitals most important in organic and biological chemistry s orbitals : spherical, nucleus at center

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1. Structure and Bonding

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Chapter 11: Theories of Covalent Bonding

Chapter 11: Theories of Covalent Bonding. 11.1 Valence Bond (VB) Theory and Orbital Hybridization 11.2 The Mode of Orbital Overlap and the Types of Covalent Bonds 11.3 Molecular Orbital (MO) Theory and Electron Delocalization. Central Themes of Valence Bond Theory.

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Chapter 13 I: Valence Bond Theory

Chapter 13 I: Valence Bond Theory. Valence Bond Theory. Bonding theories. Hybridization. Bonding Theories. Lewis structures & VSEPR do not explain: -how a bond forms -what orbitals involved in bonding A bonding theory can answer these questions Two bonding theories widely used:

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Covalent Bonding Theories

Covalent Bonding Theories. Hybridization. Theories of Covalent Bonding. Valence Bond (VB) Theory and Orbital Hybridization. The Mode of Orbital Overlap and the Types of Covalent Bonds. Molecular Orbital (MO)Theory and Electron Delocalization. Valence Bond Theory.

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Bonding III

Bonding III. Valence Bond Theory and Molecular Orbital Theory. Valence Bond Theory. Extends the Lewis concept of electron pair bonds by introducing the notion of orbital overlap and hybridization . Hybridization is necessary to account for molecular geometry predicted by VSEPR

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1.12 Electron Waves and Chemical Bonds

1.12 Electron Waves and Chemical Bonds. Models for Chemical Bonding. The Lewis model of chemical bonding predates the idea that electrons have wave properties. There are two other widely used theories of bonding that are based on the wave nature of an electron. Valence Bond Theory

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UNIT 6

UNIT 6. Theories of Covalent Bonding and Intro to Organic Chemistry Valence Bond Theory, Multiple Bonds, and Molecular Orbital Theory. Identify the Functional Groups. amlodipine a calcium channel blocker. lysergic acid diethylamide an hallucinogen. Give the Systematic (IUPAC) Name.

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Linear Electronic Geometry: AB 2 Species (No Lone Pairs of Electrons on A)

Linear Electronic Geometry: AB 2 Species (No Lone Pairs of Electrons on A). Some examples of molecules with this geometry are: BeCl 2 , BeBr 2 , BeI 2 , HgCl 2 , CdCl 2 All of these examples are linear, nonpolar molecules. Important exceptions occur when the two substituents are not the same!

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Day 3

Day 3. Agenda Discuss bond angles Review hybridization Work on determining orbitals involved in bonding Write Results for qualitative analysis lab. Effect Bond Angles p399. Lone pairs Require more space Reduce bond angle Double/triple bonds

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Bond Theories

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Chemistry 142

Chemistry 142. Review. Chapter 13: Chemical Kinetics . Rate Relativ e Rate of Reaction Law of Mass Action and Instantaneous Rate of Reaction Rate Law Reaction order Effect of nature of reactants, temperature, molecular orientation, concentration, catalyst

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SHAPES HL

SHAPES HL. Valence Share Electron Pair Repulsion (VSEPR) Theory. Valence Share Electron-Pair Repulsion (VSEPR) model allows us to predict the molecular shape by assuming that the repulsive forces of electron pairs cause them to be as far apart as possible from each other.

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Chemical Bonding

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Valence Bond Theory vs. MO Theory

Valence Bond Theory vs. MO Theory. VB Theory begins with two steps: 1 ) hybridization AOs on atoms participating in bonding 2 ) Combinatio n of hybrid orbitals to make bonds. Key differences between MO and VB theory:

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VSEPR Theory and Valence bond theory

VSEPR Theory and Valence bond theory. Learning Outcomes At the end of this presentation the students will be able to: Explain VSEPR Theory 2.State the postulates of Valence bond Theory . V alence S hell E lectron P air R epulsion Theory.

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Nature of the Chemical Bond

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