1 / 10

After today, you will be able to…

After today, you will be able to…. Explain Valence Shell Electron Pair Repulsion Theory (VSEPRT) Use structural formulas to describe the molecular geometry of atoms Identify the correct geometric name for the shape of the molecule Identify bond angles for molecules. Day 4 - Notes.

mason-carney
Download Presentation

After today, you will be able to…

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. After today, you will be able to… • Explain Valence Shell Electron Pair Repulsion Theory (VSEPRT) • Use structural formulas to describe the molecular geometry of atoms • Identify the correct geometric name for the shape of the molecule • Identify bond angles for molecules

  2. Day 4 - Notes Unit 4: Chemical Bonding Molecular Geometry

  3. Molecular Geometry • Valence Shell Electron Pair Repulsion Theory (VSEPR):The electron pairs (both shared and unshared) in the outermost energy level try to get as far apart from each other as possible. • This determines the shape of the molecule.

  4. Shape: Linear 2 atoms • Example: H2 3 atoms • Example: CO2 ~180˚ O H C H O Central atom must have NO unshared pairs

  5. Shape: Bent 3 atoms • Example: H2O O Central atom can have one or two unshared pairs of electrons H ~104.5˚ H

  6. Shape: Trigional Planar 4 atoms • Example: CH2O O ~120˚ C Central atom has NO unshared pairs H H

  7. Shape: Pyramid 4 atoms • Example: NH3 Central atom has one unshared pair H H N ~107.5˚ H

  8. Shape: Tetrahedral 5 atoms • Example: CH4 Central atom has NO unshared pairs H ~109.5˚ H H C H

  9. Shape: Trigional Bipyramidal • 6 atoms • Example: PF5 Central atom has NO unshared pairs F ~90˚ F F F ~120˚ P For elements in period 3 and higher, when bonded to Cl or F, will have an expanded octet. F

  10. Summary of Shapes Linear Bent Trigional planar Pyramid Tetrahedral Trigional bipyramidal

More Related