Multiple Choice
What is the electron domain geometry of the carbon atom in methane (CH_4)?
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12. Molecular Shapes & Valence Bond Theory
Electron Geometry
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the electron geometry of carbon dioxide (CO_2)?
A
Bent
B
Tetrahedral
C
Trigonal planar
D
Linear
Verified step by step guidance1
Identify the central atom in the molecule, which is carbon (C) in 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 electron geometry based on the number of electron regions. Two regions of electron density arrange themselves to minimize repulsion by being 180° apart.
Recognize that with two regions of electron density and no lone pairs, the electron geometry is linear.
Confirm that the molecular geometry matches the electron geometry in this case, so CO_2 has a linear shape.
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