Multiple Choice
What is the molecular geometry of ozone (O_3)?
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12. Molecular Shapes & Valence Bond Theory
Molecular Geometry
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Which of the following best describes the molecular geometry of carbon dioxide (CO_2)?
A
Linear
B
Tetrahedral
C
Bent
D
Trigonal planar
Verified step by step guidance1
Identify the central atom in the molecule, which is carbon (C) in carbon dioxide (CO\_2).
Determine the number of regions of electron density (bonding and lone pairs) around the central atom. Carbon forms two double bonds with oxygen atoms and has no lone pairs.
Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to predict the molecular geometry. Two regions of electron density around the central atom will arrange themselves to be as far apart as possible.
Recognize that two regions of electron density with no lone pairs result in a linear molecular geometry with a bond angle of approximately 180 degrees.
Conclude that the molecular geometry of CO\_2 is linear, not tetrahedral, bent, or trigonal planar.
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