CH115-1C Patterson SI
Worksheet 8
For the following, draw the molecule and list the name or the chemical formula, the number of regions
of electron density, the electronic geometry, the molecular geometry and the hybridization about the
central atom.
*Remember to use dashed and wedged lines if necessary
-- #s 1, 3, 5, and 6 will be best solved by trying to find
the formal charge of the atoms and deciding which
configuration is more stable
1.
Dihydrogen Sulfate (Sulfuric Acid) H2SO4
2.
Xenon Difluoride
XeF2
Regions of Electron Density: 5
Electronic Geometry: trigonal/ triangular
pyramidal
Regions of Electron Density: 4
Molecular Geometry: linear
Electronic Geometry: tetrahedral
Hybridization of central atom: sp3d
Molecular Geometry: tetrahedral
Hybridization of central atom: sp3
3.
Permanganate
MnO4-
4.
Hydrogen Acetate (choose one carbon)
HCH3COO (this can be written many ways)
Stereochemistry is not
shown
Stereochemistry is
not shown
Regions of Electron Density: 1. 4 / 2. 3
Electronic Geometry: 1. tetrahedral / 2. Trigonal
planar
Regions of Electron Density: 4
Electronic Geometry: tetrahedral
Molecular Geometry: tetrahedral
3
Hybridization of central atom: sp
Molecular Geometry: 1. tetrahedral / 2. Trigonal
planar
Hybridization of central atom: 1. sp3 / 2. sp2
CH115-1C Patterson SI
5.
ClO3-
Worksheet 8
Chlorate ion
6.
N2O4 Dinitrogen tetroxide
Regions of Electron Density: 4
Regions of Electron Density: 3
Electronic Geometry: tetrahedral
Electronic Geometry: trigonal planar
Molecular Geometry: triangular pyramidal
Molecular Geometry: trigonal planar
Hybridization of central atom: sp3
Hybridization of central atom: sp2
7.
Dihydrogen Monoxide
H
H2O
8.
S2O32-
Thiosulfate ion
O
H
Regions of Electron Density: 4
Electronic Geometry: tetrahedral
Regions of Electron Density: 4
Molecular Geometry: tetrahedral
Electronic Geometry: tetrahedral
Hybridization of central atom: sp3
Molecular Geometry: tetrahedral
Hybridization of central atom: sp3
9.
IF5
Iodide pentafluoride
10.
TeCl4
Cl
F
F
F
I
F
Tellurium tetrachloride
F
Cl
Te
Cl
Cl
Regions of Electron Density: 6
Regions of Electron Density: 5
Electronic Geometry: octahedral
Electronic Geometry: trigonal bipyramidal
Molecular Geometry: square pyramidal
Molecular Geometry: seesaw
Hybridization of central atom: sp3d2
Hybridization of central atom: sp3d
CH115-1C Patterson SI
11.
Worksheet 8
Chlorine Tribromide
ClBr3
12.
CO2
carbon dioxide
Br
Cl
Br
Br
Regions of Electron Density: 2
Electronic Geometry: linear
Regions of Electron Density: 5
Molecular Geometry: linear
Electronic Geometry: trigonal bipyramidal
Hybridization of central atom: sp
Molecular Geometry: T-shaped
Hybridization of central atom: sp3d
***Bonus: Can you state the bond angles that you should find for all of the molecules above?
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
109.5
90, 120
109.5
109.5 / 120
109.5
120
109.5 (104.5)
109.5
90
90, 120
90, 120
180