Multiple Choice
Which of the following best describes the molecular geometry of OCl_2 (dichlorine monoxide)?
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12. Molecular Shapes & Valence Bond Theory
Molecular Geometry
Multiple Choice
What is the molecular geometry of CHClO (formaldehyde)?
A
Trigonal planar
B
Tetrahedral
C
Linear
D
Bent
Verified step by step guidance1
Identify the central atom in the molecule CHClO. In formaldehyde (CHClO), the central atom is carbon (C).
Determine the number of regions of electron density (bonding and lone pairs) around the central atom. Carbon forms three single bonds: one with hydrogen (H), one with chlorine (Cl), and one double bond with oxygen (O). This counts as three regions of electron density.
Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to predict the molecular geometry. Three regions of electron density around the central atom with no lone pairs correspond to a trigonal planar electron geometry.
Since there are no lone pairs on the central carbon atom, the molecular geometry is the same as the electron geometry, which is trigonal planar.
Conclude that the molecular geometry of CHClO (formaldehyde) is trigonal planar.
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