VSEPR Theory
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What does VSEPR theory stand for?
valence shell electron pair repulsion theory
VSEPR theory
electron domains around an atom repel each other non bonding (lone pairs) repel more than bonding pairs
What effect does lone pairs have on bond angle?
pushes electrons closer by 2degrees
2 electron domains • 2 bonding electron domains • 0 non-bonding electron domains
electron domain geometry: linear 180 molecular geometry: linear 180
3 electron domains • 3 bonding electron domains • 0 non-bonding electron domains
electron domain geometry: planar triangular 120 molecular geometry: planar triangular 120
3 electron domains • 2 bonding electron domains • 1 non-bonding electron domain
electron domain geometry: planar triangular 120 molecular geometry: v-shaped 117
4 electron domains • 4 bonding electron domains • 0 non-bonding electron domains
electron domain geometry: tetrahedral 109.5 molecular geometry: tetrahedral 109.5
4 electron domains • 3 bonding electron domains • 1 non-bonding electron domain
electron geometry: tetrahedral 109.5 molecular geometry: pyramidal 107
4 electron domains • 2 bonding electron domains • 2 non-bonding electron domains
electron domain geometry: tetrahedral 109.5 molecular geometry: v-shaped 104
linear drawing

planar triangular drawing

v-shaped drawing

tetrahedral drawing

pyramidal drawing
