| Orbitals | LCAO | Bonding and Antibonding | Hybridization |
|---|---|---|---|
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What are the two orbitals discussed in lecture?
S & P orbitals
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What does LCAO stand for? What does it mean?
Linear combination of atomic orbitals. It is when wave functions are added together to produce the wave function of new orbitals.
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Explain bonding vs. anti bonding
Bonding: same wave function sign of two orbitals interact. Inc. e- density
Antibonding: opposing wave function sign interact, there is no e- density. A node is formed. |
What does VSEPR stand for
Valence Shell Electron Pari Repulsion Theory
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What is the probability of finding electrons at the nucleus? (high or low)
High
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What are the two types of LCAO's and what do they mean?
1. Molecular orbitals: orbitals of two different atoms interact
2. Hybrid orbitals: orbitals of the same atom interact |
What is constructive and destructive interaction?
Constructive: same sign, two orbitals are in same phase
Destructive: two orbitals are out of phase, different signs |
Draw a linear molecule. What angle are the atoms separated by?
180 degrees
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What is the probability of finding electrons at a nodal plane? (high or low)
Low
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What do hybrid orbitals define?
The geometry of the bonds
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Draw a bonding and anti bonding s orbital
on board
|
Draw a trigonal planar molecule. What angle are the atoms separated by?
120 degrees
|
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Draw an s orbital
on board
|
Draw an orbital with a nodal plane
on board
|
draw a bonding and anti bonding p orbital
on board
|
Draw a tetrahedral molecule. What angle are the atoms separated by?
109 degrees
|
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Draw a p orbital
on board
|
Draw a molecular orbital diagram for two H atoms
on board
|
draw a bonding and anti bonding s and p orbital
on board
|
What shape does sp, sp2, and sp3 correspond to?
sp- linear
sp2- trigonal planar sp3- tetrahedral |
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