Geometric shapes

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Last updated 7:17 PM on 9/29/26
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13 Terms

1
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Linear​

2 bonds

180° apart

straight line

no lone pairs

<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">2 bonds</span></p><p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);"> 180° apart</span></p><p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">straight line</span></p><p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">no lone pairs</span></p>
2
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">Trigonal Planar</span></p>

Trigonal Planar

3 bonds

all in the same flat plane

120° apart

no lone pairs

3
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">Bent/Angular</span></p>

Bent/Angular

3 e⁻ regions

2 bonds + 1 lone pair

V-shape

120 degrees

4
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Tetrahedral

4 bonds

3D pyramid with triangular base

109.5°

No lone pairs

<p>4 bonds </p><p>3D pyramid with triangular base </p><p>109.5°</p><p>No lone pairs</p>
5
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Trigonal Pyramidal

4 e⁻ regions

3 bonds + 1 lone pair

like a tripod

<(less) 109.5°

<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">4 e⁻ regions</span></p><p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">3 bonds + 1 lone pair</span></p><p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">like a tripod</span></p><p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">&lt;(less) 109.5°</span></p>
6
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">Seesaw​</span></p>

Seesaw​

5 e⁻ regions

4 bonds + 1 lone pair


7
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">Trigonal Bipyramidal</span></p>

Trigonal Bipyramidal

5 bonds

2 on top/bottom (axial)

3 in the middle (equatorial)

8
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">T-Shaped</span></p>

T-Shaped

5 e⁻ regions

3 bonds + 2 lone pairs

looks like a "T"

9
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">Linear</span></p>

Linear

5 e⁻ regions, 2 bonds + 3 lone pairs, straight line

10
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">Octahedral</span></p>

Octahedral

6 bonds

4 in a square plane + 1 top + 1 bottom

90°

11
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">Square Pyramidal</span></p>

Square Pyramidal

6 e⁻ regions

5 bonds + 1 lone pair

Square base with 1 atom on top

12
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<p><span style="background-color: lab(100 0 0); color: lab(2.75381 0 0);">Square Planar</span></p>

Square Planar

6 e⁻ regions

4 bonds + 2 lone pairs (top/bottom)

all atoms in a flat square

13
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<p>Bent/Angular</p>

Bent/Angular

4 e⁻ regions

2 bonds + 2 lone pairs

V-shape

<109.5°