VESPR Shapes of molecules

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Last updated 8:27 PM on 9/26/26
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14 Terms

1
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Steric number

total number of electron groups (bonds + lone pairs)

2
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SN 2

Linear - 180°

3
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SN 3 - no lone pairs

Trigonal planar - 120°

4
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SN 3 - one lone pair

Bent - <120°

5
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SN 4 - No lone pairs

Tetrahedral - 109.5°

6
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SN 4- one lone pair

Trigonal pyramidal - <109.5°

7
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SN 4 - two lone pairs

Bent - < 109.5°

8
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SN 5 - no lone pairs

Trigonal bipyramidal - 90°, 120°

9
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SN 5 - one lone pair

Seesaw - <120°, <90°

10
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SN 5 - two lone pairs

T - Shaped - <90°

11
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SN 5 - three lone pairs

Linear - 180°

12
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SN 6, - no lone pairs

octahedral - 90°

13
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SN 6 - one lone pair

Square Pyramidal - <90°

14
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SN 6 - two lone pairs

Square planar - 90°