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Slide 1 of 28 © Copyright Pearson Prentice Hall Bonding Theories > 8.3 Molecular Orbitals A Sigma Bond.

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Presentation on theme: "Slide 1 of 28 © Copyright Pearson Prentice Hall Bonding Theories > 8.3 Molecular Orbitals A Sigma Bond."— Presentation transcript:

1 Slide 1 of 28 © Copyright Pearson Prentice Hall Bonding Theories > 8.3 Molecular Orbitals A Sigma Bond

2 Slide 2 of 28 © Copyright Pearson Prentice Hall Bonding Theories > 8.3 Molecular Orbitals Pi Bonds In a pi bond (symbolized by the Greek letter  ), the bonding electrons are most likely to be found in sausage-shaped regions above and below the bond axis of the bonded atoms.

3 © Copyright Pearson Prentice Hall Slide 3 of 28 Bonding Theories > 8.3 Molecular Orbitals Pi-bonding Orbital

4 © Copyright Pearson Prentice Hall Bonding Theories > Slide 4 of VSEPR Theory How does VSEPR theory help predict the shapes of molecules?

5 © Copyright Pearson Prentice Hall Bonding Theories > Slide 5 of Hybrid Orbitals In what ways is orbital hybridization useful in describing molecules?

6 Slide 6 of 28 © Copyright Pearson Prentice Hall Bonding Theories > Hybrid Orbitals Orbital hybridization provides information about both molecular bonding and molecular shape. In hybridization, several atomic orbitals mix to form the same total number of equivalent hybrid orbitals. 8.3

7 © Copyright Pearson Prentice Hall Slide 7 of 28 Bonding Theories > 8.3 Hybrid Orbitals Hybridization Involving Single Bonds

8 © Copyright Pearson Prentice Hall Slide 8 of 28 Bonding Theories > 8.3 Hybrid Orbitals Hybridization Involving Double Bonds

9 Slide 9 of 28 © Copyright Pearson Prentice Hall Bonding Theories > 8.3 Hybrid Orbitals Hybridization Involving Triple Bonds

10 © Copyright Pearson Prentice Hall Slide 10 of 28 Bonding Theories > Hybrid Orbitals Simulation 7 Compare sp, sp 2, and sp 3 hybrid orbitals.

11 © Copyright Pearson Prentice Hall Slide 11 of 28 Section Quiz -or- Continue to: Launch: Assess students’ understanding of the concepts in Section Section Quiz.

12 © Copyright Pearson Prentice Hall Slide 12 of Section Quiz. 1.A molecular orbital belongs to a a.specific atom. b.molecule as a whole. c.specific pair of atoms. d.central atom.

13 © Copyright Pearson Prentice Hall Slide 13 of Section Quiz. 2.VSEPR theory enables prediction of 3- dimensional molecular shape because the valence electron pairs a.are attracted to each other. b.form molecules with only four possible shapes. c.stay as far apart as possible. d.always form tetrahedral shapes.

14 © Copyright Pearson Prentice Hall Slide 14 of 28 3.Orbital hybridization provides information about a.both molecular bonding and molecular shape. b.both molecular bonding and bond energy. c.neither molecular bonding nor molecular shape. d.neither molecular bonding nor bond energy. 8.3 Section Quiz.

15 END OF SHOW


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