Vsepr Lab

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  • Topic: Valence, Molecular geometry, VSEPR theory
  • Pages : 3 (271 words )
  • Download(s) : 430
  • Published : March 23, 2013
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Molecular Geometry

A. Natural Orientation of Volumes about a Central Point.

You will need 20 round balloons for this experiment. Join them together as indicated in the Balloon Arrangement column and then describe the shape in the space provided.

Balloon ArrangementDescription of the Shape
Two-Balloon SetLinear
Three-Balloon Set Trigonal Planar

Four-Balloon Set
Tetrahedral

Five-Balloon Set
Trigonal Bipyramidal

Six-Balloon Set
Octahedral

B. Valence Shell Pairs: Single Bonds

Fill in the table below for the corresponding compounds. Reference the tables provided in the introductory comments for Lab #16 VSEPR Theory.

Molecular
ShapeNumber of Bonds
About Central AtomShape
Description
BF3
3Trigonal planar
BeCl2
2Linear
CH4
4Tetrahedral
PF5
5Trigonal bipyramidal
SF6
6Octahedral

C. Valence Shell Pairs: Single Bonds and Non-Bonding electron pairs

Fill in the table below for the corresponding compounds. Reference the tables provided in the introductory comments for Lab #16 VSEPR Theory.

Molecular
FormulaNumber of Bonds and
Non-Bonding PairsShape
Desrciption
NF3
3,1Trigonal pyramidal
H2S
2,2Bent
H3O+
3,1Trigonal pyramidal
PH3
3,1Trigonal pyramidal
ClO2
2,1Bent

D. Valence Shell Pairs: Single and Double Bonds and Non-Bonding electron pairs

Fill in the table below for the corresponding compounds. The shapes and other information on pages three and four of your lab will be helpful.

FormulaNumber of Bonds and
Non-Bonding Electron PairsShape
Description
CO32-
3,0Trigonal planar
SO2
2,1Bent
H2CO
3,0Trigonal planar
SO3
3,0Trigonal planar
SO32-
3,1Trigonal pyramidal
NO2-
2,1Bent
PO33-
3,1Trigonal pyramidal
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