VSEPR (electron domain geometries, molecular geometries, bond angles)
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Last updated 12:41 AM on 2/20/25
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16 Terms
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electron domain
The region in which electrons are most likely to be found (bonding and nonbonding). A lone pair, single, double, or triple bond represents one region.
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electron domain geometry
the arrangement of electron domains around the central atom
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molecular geometry
The arrangement of atoms determined by the arrangement of bonding electron pairs and lone pairs around the central atom in a molecule.
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linear (180º)
2 electron domains, 0 lone pairs
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trigonal planar (120º)
3 electron domains, 0 lone pairs
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bent/angular (≈117.5;
3 electron domains, 1 lone pair
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tetrahedral (109.5º)
4 electron domains, 0 lone pairs
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trigonal pyramidal (≈107º;
4 electron domains, 1 lone pair
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bent/angular (105º;
4 electron domains, 2 lone pairs
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trigonal bypyramidal (120º equatorial; 180º axial; 90º between axial and equatorial)
5 electron domains, 0 lone pair
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see-saw (180º axial; ≈117º/
5 electron domains, 1 lone pair
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T-shaped (180º axial; ≈88º/
5 electron domains, 2 lone pairs
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linear (180º axial)
5 electron domains, 3 lone pairs
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octahedral (90º)
6 electron domains, 0 lone pair
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square pyramidal (
6 electron domains, 1 lone pair
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square planar (90º)
6 electron domains, 2 lone pairs
Note 
Flashcards (38)