VESPR Models | CHEM121

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Last updated 7:36 AM on 10/1/26
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20 Terms

1
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Linear

Sum of lone pairs and attached atoms (E+X) = 2

<p>Sum of lone pairs and attached atoms (E+X) = 2</p>
2
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Trigonal planar

Sum of lone pairs and attached atoms (E+X) = 3

<p>Sum of lone pairs and attached atoms (E+X) = 3</p>
3
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Tetrahedral

Sum of lone pairs and attached atoms (E+X) = 4

<p>Sum of lone pairs and attached atoms (E+X) = 4</p>
4
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Trigonal bipyramidal

Sum of lone pairs and attached atoms (E+X) = 5

<p>Sum of lone pairs and attached atoms (E+X) = 5</p>
5
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Octahedral

Sum of lone pairs and attached atoms (E+X) = 6

<p>Sum of lone pairs and attached atoms (E+X) = 6</p>
6
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Pentagonal bipyramidal

Sum of lone pairs and attached atoms (E+X) = 7

<p>Sum of lone pairs and attached atoms (E+X) = 7</p>
7
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Linear

Parent shape → Linear

E = 0, X = 2

180 degrees


<p>Parent shape → Linear</p><p>E = 0, X = 2</p><p>180 degrees</p><p></p>
8
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Trigonal planar

Parent shape → Trigonal planar

E = 0, X = 3

120 degrees


<p>Parent shape → Trigonal planar</p><p>E = 0, X = 3</p><p>120 degrees</p><p></p>
9
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Bent

Parent shape → Trigonal planar

E = 1, X = 2

120 degrees

<p>Parent shape → Trigonal planar</p><p>E = 1, X = 2</p><p>120 degrees</p>
10
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Tetrahedral

Parent shape → Tetrahedral

E = 0, X = 4

109.5 degrees

<p>Parent shape → Tetrahedral</p><p>E = 0, X = 4</p><p>109.5 degrees</p>
11
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Trigonal pyramidal

Parent shape → Tetrahedral

E = 1, X = 3

109.5 degrees

<p>Parent shape → Tetrahedral</p><p>E = 1, X = 3</p><p>109.5 degrees</p>
12
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Bent

Parent shape → Tetrahedral

E = 2, X = 2

109.5 degrees

<p>Parent shape → Tetrahedral</p><p>E = 2, X = 2</p><p>109.5 degrees</p>
13
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Trigonal bipyramidal

Parent shape → Trigonal bipyramidal

E = 0, X = 5

90 degrees (ax-eq) 120 degrees (eq-eq) 180 degrees (ax-ax)

<p>Parent shape → Trigonal bipyramidal</p><p>E = 0, X = 5</p><p>90 degrees (ax-eq) 120 degrees (eq-eq) 180 degrees (ax-ax)</p>
14
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Seesaw

Parent shape → Trigonal bipyramidal

E = 1, X = 4

90 degrees (ax-eq) 120 degrees (eq-eq) 180 degrees (ax-ax)

<p>Parent shape → Trigonal bipyramidal</p><p>E = 1, X = 4</p><p>90 degrees (ax-eq) 120 degrees (eq-eq) 180 degrees (ax-ax)</p>
15
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T-shaped

Parent shape → Trigonal bipyramidal

E = 2, X = 3

90 degrees (ax-eq)

180 degrees (ax-ax)

<p>Parent shape → Trigonal bipyramidal</p><p>E = 2, X = 3</p><p>90 degrees (ax-eq) </p><p>180 degrees (ax-ax)</p>
16
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Linear

Parent shape → Trigonal bipyramidal

E = 3, X = 2

180 degrees (ax-ax)

<p>Parent shape → Trigonal bipyramidal</p><p>E = 3, X = 2</p><p>180 degrees (ax-ax)</p>
17
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Octahedral

Parent shape → Octahedral

E = 0, X = 6

90 degrees and 180 degrees

<p>Parent shape → Octahedral</p><p>E = 0, X = 6</p><p>90 degrees and 180 degrees</p>
18
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Square-based pyramidal

Parent shape → Octahedral

E = 1, X = 5

90 degrees and 180 degrees

<p>Parent shape → Octahedral</p><p>E = 1, X = 5</p><p>90 degrees and 180 degrees</p>
19
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Square planar

Parent shape → Octahedral

E = 2, X = 4

90 degrees and 180 degrees

<p>Parent shape → Octahedral</p><p>E = 2, X = 4</p><p>90 degrees and 180 degrees</p>
20
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Pentagonal bipyramidal

Parent shape → Pentagonal bipyramidal

E = 0, X = 7

72 degrees (ax-eq) 90 degrees (eq-eq) 180 degrees (ax-ax)

<p>Parent shape → Pentagonal bipyramidal</p><p>E = 0, X = 7</p><p><span>72 degrees (ax-eq) 90 degrees (eq-eq) 180 degrees (ax-ax)</span></p>