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Questions and Answers
What is the difference between electron geometry and molecular geometry?
What is the difference between electron geometry and molecular geometry?
In which cases do you expect deviations from the idealized bond angle? (Check all that apply)
In which cases do you expect deviations from the idealized bond angle? (Check all that apply)
What are the 4 types of electron geometry for 2, 3, 4, 5, and 6 bonds?
What are the 4 types of electron geometry for 2, 3, 4, 5, and 6 bonds?
Linear, trigonal planar, tetrahedral, trigonal bipyramidal, octahedral
What are the hybridizations for linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral geometries?
What are the hybridizations for linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral geometries?
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For 2 bonds and 0 lone pairs: e- geometry=, molecular geometry=, hybridization=, bond angle=, polar or nonpolar?
For 2 bonds and 0 lone pairs: e- geometry=, molecular geometry=, hybridization=, bond angle=, polar or nonpolar?
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For 2 bonds and 1 lone pair: e- geometry=, molecular geometry=, hybridization=, bond angle=, polar or nonpolar?
For 2 bonds and 1 lone pair: e- geometry=, molecular geometry=, hybridization=, bond angle=, polar or nonpolar?
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For 3 bonds and 0 lone pairs: e- geometry=, molecular geometry=, hybridization=, bond angle=, polar or nonpolar?
For 3 bonds and 0 lone pairs: e- geometry=, molecular geometry=, hybridization=, bond angle=, polar or nonpolar?
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What is the molecular geometry and hybridization for 3 bonds and 1 lone pair?
What is the molecular geometry and hybridization for 3 bonds and 1 lone pair?
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Study Notes
VSEPR Theory and Geometries
- VSEPR theory distinguishes between electron geometry and molecular geometry.
- Electron geometry accounts for lone pairs and bonding pairs, while molecular geometry focuses solely on atomic arrangement.
- Lone pairs increase repulsion, affecting bond angles.
Deviations from Ideal Bond Angles
- PF3 and SBr2 have lone pairs on the central atom, leading to bond angle deviations.
- CH3Br may deviate due to larger atoms (Cl or Br) and the presence of multiple bonds.
- BCl3 has no lone pairs and symmetrical identical atoms, maintaining ideal bond angles.
Types of Electron Geometry
- Two bonds: linear
- Three bonds: trigonal planar
- Four bonds: tetrahedral
- Five bonds: trigonal bipyramidal
- Six bonds: octahedral
Hybridization Types
- Linear geometry corresponds to sp hybridization.
- Trigonal planar geometry corresponds to sp2 hybridization.
- Tetrahedral geometry corresponds to sp3 hybridization.
- Trigonal bipyramidal geometry corresponds to sp3d hybridization.
- Octahedral geometry corresponds to sp3d2 hybridization.
Molecular Geometry for Various Structures
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For 2 bonds and 0 lone pairs:
- Electron geometry: linear
- Molecular geometry: linear
- Hybridization: sp
- Bond angle: 180°
- Nonpolar
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For 2 bonds and 1 lone pair:
- Electron geometry: linear
- Molecular geometry: linear
- Hybridization: sp
- Bond angle: none (depends on other factors)
Geometry with Three Bonds
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For 3 bonds and 0 lone pairs:
- Electron geometry: trigonal planar
- Molecular geometry: trigonal planar
- Hybridization: sp2
- Bond angle: 120°
- Nonpolar
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For 3 bonds and 1 lone pair:
- Electron geometry: trigonal planar
- Molecular geometry: bent
- Hybridization: sp2
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Test your understanding of VSEPR theory with our Chapter 10 flashcards. Discover the differences between electron geometry and molecular geometry. Perfect for quick revision or deepening your grasp of molecular structures.
