Multiple Choice
What is the molecular geometry of sulfur tetrafluoride (SF_4)?
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12. Molecular Shapes & Valence Bond Theory
Molecular Geometry
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What is the molecular geometry of CO_2?
A
Trigonal planar
B
Linear
C
Bent
D
Tetrahedral
Verified step by step guidance1
Identify the central atom in the molecule CO_2, which is carbon (C).
Determine the number of electron groups around the central atom. Carbon forms two double bonds with oxygen atoms, so there are two regions of electron density.
Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to predict the shape. Two regions of electron density around the central atom will arrange themselves to be as far apart as possible, which is 180° apart.
Recognize that with two bonding groups and no lone pairs on the central atom, the molecular geometry is linear.
Conclude that the molecular geometry of CO_2 is linear, not trigonal planar, bent, or tetrahedral.
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