Chem133 Chapter11

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ColeJT1227
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241930
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Chem133 Chapter11
Updated:
2013-10-21 18:55:27
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Chem Chemistry 133 Chem133 Chemistry133 Test2 Foust
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Chapter 11
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  1. What is Valence Bond (VB) Theory say?
    Orbitals of two atoms overlap, and the electrons occupy the overlapping region.
  2. Linear Electron configuration:
    Which orbitals are hybridized?
    How many hybrid orbitals of what type are formed?
    How many unhybridized orbitals of what type remain?
    • Hybridized: one s, one p
    • Hybrids formed: two sp
    • Unhybridized: two p
  3. Trigonal planar configuration:
    Which orbitals are hybridized?
    How many hybrid orbitals of what type are formed?
    How many unhybridized orbitals of what type remain?
    • Hybridized: one s, two p
    • Hybrids formed: three sp2 
    • Unhybridized: one p
  4. Tetrahedral configureation:
    Which orbitals are hybridized?
    How many hybrid orbitals of what type are formed?
    How many unhybridized orbitals of what type remain?
    • Hybridized: one s, three p
    • Hybrids formed: four sp3
    • Unhybridized: none
  5. Trigonal Bipyramidal:
    Which orbitals are hybridized?
    How many hybrid orbitals of what type are formed?
    How many unhybridized orbitals of what type remain?
    • Hybridized: one s, three p, one d
    • Hybrids formed: five sp3d
    • Unhybridized: four d
  6. Octahedral configuration: 
    Which orbitals are hybridized?
    How many hybrid orbitals of what type are formed?
    How many unhybridized orbitals of what type remain?
    • Hybridized: one s, three p, two d
    • Hybrids formed: six sp3d2
    • Unhybridized: three d
  7. Which is stronger? A pi bond, or a sigma bond?
    A sigma bond is stronger because orbitals overlap more end-to-end than side-to-side
  8. Which bond restricts rotation?
    Pi Bonds because the interacting orbitals need to be parallel to each other.
  9. What is the difference between VB and MO theories?
    • VB says the orbitals are localized
    • MO says they are delocalized.
  10. What is the electron configuration of H2?
  11. How do you compute the MO bond order?
  12. Three points about MO bond order:
    • A bond order > 0: the bond is more stable than separate atoms
    • Bond order = 0: The bond is as stable as separate atoms, so it will not form.
  13. What is the typical energy order for MOs derived from 2p orbitals?

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