Molecular Orbital Theory - PowerPoint PPT Presentation

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Molecular Orbital Theory

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Molecular Orbital Theory. Atomic orbitals mix together and make: Bonding Orbitals ... Use handout to fill in and. determine bond orders ... – PowerPoint PPT presentation

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Title: Molecular Orbital Theory


1
Molecular Orbital Theory
  • Atomic orbitals mix together and make
  • Bonding Orbitals
  • Electrons in these orbitals help hold atoms near
    each other
  • Antibonding Orbitals
  • Electrons in these orbitals push atoms apart from
    each other
  • Nonbonding Orbitals
  • Electrons in these orbitals have no effect on
    bonding
  • Molecular Orbitals can
  • be Sigma or Pi
  • be spread over multiple atoms

2
Molecular Orbital Theory
  • Molecular Orbitals can
  • be Sigma or Pi
  • be spread over multiple atoms

3
MO Diagram for H2H H ? H2
4
Li2
Bond Order 2 electrons in a bonding orbital 1
bond 2 electrons in an antibonding orbital -1
bond
5
H2/He2 Examples
6
MOs from p-Orbitals
7
General MO Diagram for p-block elements
Use handout to fill in and determine bond orders
8
Paramagnetic a compound with any unpaired
electrons Diamagnetic no unpaired electrons.
9
Who Cares?Top 5 reasons.
  • Paramagnetism.
  • Excited states, colors, glowing things.
  • Eyesight.
  • Structures of all the molecules.
  • Its actually right.

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