Multiple Choice
Which electron geometry is consistent with a molecular geometry of trigonal pyramidal?
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12. Molecular Shapes & Valence Bond Theory
Electron Geometry
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What is the electron geometry around the central atom in OF_2?
A
Tetrahedral
B
Linear
C
Bent
D
Trigonal planar
Verified step by step guidance1
Identify the central atom in the molecule OF_2, which is oxygen (O).
Determine the number of electron domains (regions of electron density) around the central oxygen atom. This includes both bonding pairs and lone pairs of electrons.
Count the bonding pairs: oxygen is bonded to two fluorine atoms, so there are 2 bonding pairs.
Count the lone pairs on the oxygen atom. Oxygen has 6 valence electrons, and after forming two bonds, the remaining electrons form lone pairs. Calculate the number of lone pairs accordingly.
Use the total number of electron domains (bonding pairs + lone pairs) to determine the electron geometry using the VSEPR theory. For 4 electron domains, the electron geometry is tetrahedral.
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