Molecular Geometry Worksheet - Pogil Activities For High School Chemistry

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Molecular Geometry
How can molecular shapes be predicted using the VSEPR theory?
Why?
When you draw a Lewis structure for a molecule on paper, you are making a two-dimensional representa-
tion of the atoms. In reality however, molecules are not flat—they are three-dimensional. The true shape
of a molecule is important because it determines many physical and chemical properties for the substance.
In this activity you will learn how to predict molecular shapes.
Model 1 – Lewis Structures
H
CO
3-D Molecular Shape
2
3 electron domains
(3 bonding, 0 nonbonding)
BeF
2
2 electron domains
(2 bonding, 0 nonbonding)
CH
4
4 electron domains
(4 bonding, 0 nonbonding)
NH
3
4 electron domains
(3 bonding, 1 nonbonding)
H
O
2
4 electron domains
(2 bonding, 2 nonbonding)
CO
2
2 electron domains
(2 bonding, 0 nonbonding)
••
Lone pair =
Molecular Geometry
1

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