1. Studio 4b: Shape Sorter

2. Shape Sorter
The Rules
1) Nature loves symmetry! (bond lengths and angles)
2) Atoms or electrons like to be as far apart from each other as possible without disrupting the symmetry too drastically.
3) And, lone pairs take up more space because they are not confined by bonds.

3. BH NO2-
120o
Electron pair geometry: Triangular planar Triangular planar
Molecular geometry: Triangular planar Bent/Angular
What do you notice about the double bond?

4. Methane, Ammonia, Water 4
109.5
107.5
104.5
Electron pair geometry: Tetrahedral Tetrahedral Tetrahedral
Molecular geometry : Tetrahedral Triangular pyramidal Bent/Angular
Electron pair = nonbonding electrons + bonded atoms
Molecular –only looks at shape of atoms; not lone pairs

5. 5 Electron Pair Geometry: Triangular Bipyramidal
SF4
PCl5
120
Seesaw 90
Triangular Bipyramidal
BrF3
XeF2
Linear
T-shaped

6. 6 SF6 BrF5 XeF4 Electron Pair Geometry: Octahedral Square Pyramidal90
Square Pyramidal
Octahedral
XeF4
Square Planar

7. Shape practice ICl3 CO2 PBr3 SeO3 Valence electrons Lewis Structure
Electron pair geometry
Molecular Geometry