VSEPR Shapes and Formulas

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27/5/25

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17 Terms

1
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e =

number of lone pairs

2
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x =

number of bonding pairs

3
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x = 2

  • AX2

  • linear

  • symmetrical

  • orbital hybridization: sp

<ul><li><p>AX<sub>2</sub></p></li><li><p>linear </p></li><li><p>symmetrical </p></li><li><p>orbital hybridization: sp</p></li></ul><p></p>
4
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x = 3

  • AX3

  • trigonal planar

  • symmetrical

  • orbital hybridization: sp2

<ul><li><p>AX<sub>3</sub></p></li><li><p>trigonal planar </p></li><li><p>symmetrical </p></li><li><p>orbital hybridization: sp<sup>2</sup></p></li></ul><p></p>
5
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x = 2 e = 1

  • AX2E

  • trigonal planar: bent of v-shaped

  • non-symmetrical

  • sp2

<ul><li><p>AX<sub>2</sub>E</p></li><li><p>trigonal planar: <strong>bent of v-shaped</strong></p></li><li><p>non-symmetrical</p></li><li><p>sp<sup>2</sup></p></li></ul><p></p>
6
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X = 4

  • AX4

  • tetrahedral

  • symmetrical

  • sp3

<ul><li><p>AX<sub>4</sub></p></li><li><p>tetrahedral</p></li><li><p>symmetrical</p></li><li><p>sp<sup>3</sup></p></li></ul><p></p>
7
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X = 3 e = 1

  • AX3E

  • tetrahedral: trigonal pyramidal

  • non-symmetrical

  • sp3

<ul><li><p>AX<sub>3</sub>E</p></li><li><p>tetrahedral: <strong>trigonal pyramidal</strong></p></li><li><p>non-symmetrical</p></li><li><p>sp<sup>3</sup></p></li></ul><p></p>
8
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x = 2 e = 2

  • AX2E2

  • tetrahedral: bent or v shaped

  • non-symmetrical

  • sp3

<ul><li><p>AX<sub>2</sub>E<sub>2</sub></p></li><li><p>tetrahedral: <strong>bent or v shaped </strong></p></li><li><p>non-symmetrical</p></li><li><p>sp<sup>3</sup></p></li></ul><p></p>
9
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x = 5

  • AX5

  • trigonal bipyramidal

  • sp3d

<ul><li><p>AX<sub>5</sub></p></li><li><p>trigonal bipyramidal</p></li><li><p>sp<sup>3</sup>d</p></li></ul><p></p>
10
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x = 4 e = 1

  • AX4E

  • trigonal bipyramidal: seesaw

  • non symmetrical

  • sp3d

<ul><li><p>AX<sub>4</sub>E</p></li><li><p>trigonal bipyramidal: <strong>seesaw</strong></p></li><li><p>non symmetrical </p></li><li><p>sp<sup>3</sup>d</p></li></ul><p></p>
11
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x = 3 e = 2

  • AX3E2

  • trigonal bipyramidal: t-shaped

  • sp3d

<ul><li><p>AX<sub>3</sub>E<sub>2</sub></p></li><li><p>trigonal bipyramidal: <strong>t-shaped</strong></p></li><li><p>sp<sup>3</sup>d</p></li></ul><p></p>
12
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x = 2 e = 3

  • AX2E3

  • trigonal bipyramidal: linear

  • symmetrical

  • sp3d

<ul><li><p>AX<sub>2</sub>E<sub>3</sub></p></li><li><p>trigonal bipyramidal: <strong>linear</strong></p></li><li><p>symmetrical </p></li><li><p>sp<sup>3</sup>d</p></li></ul><p></p>
13
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x = 6

  • AX6

  • octahedral

  • sp3d2

<ul><li><p>AX<sub>6</sub></p></li><li><p>octahedral</p></li><li><p>sp<sup>3</sup>d<sup>2</sup></p></li></ul><p></p>
14
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X = 5 E =1

  • AX5E

  • octahedral: square pyramidal

  • sp3d2

<ul><li><p>AX<sub>5</sub>E</p></li><li><p>octahedral: <strong>square pyramidal</strong></p></li><li><p>sp<sup>3</sup>d<sup>2</sup></p></li></ul><p></p>
15
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X = 4 e = 2

  • AX4E2

  • octahedral: square planar

  • sp3d2

16
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non-symmetrical

  • bent

  • trigonal pyramidal

  • see saw

17
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symmetrical shapes

  • linear

  • trigonal planar

  • tetrahedral