NCEA Level 3 Chemistry - Lewis structure Shapes

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12 Terms

1
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Linear

- Two regions of negative charge on central atom and no lone pairs.

- 180 degree bond angle

<p>- Two regions of negative charge on central atom and no lone pairs.</p><p>- 180 degree bond angle</p>
2
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Bent (120)

- Three regions of negative charge, two bonding and one lone pair.

- 120 degree bond angle

<p>- Three regions of negative charge, two bonding and one lone pair.</p><p>- 120 degree bond angle</p>
3
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Bent (109)

- Four regions of negative charge, two bonding and two lone pairs.

- 109 degree bond angle.

<p>- Four regions of negative charge, two bonding and two lone pairs.</p><p>- 109 degree bond angle.</p>
4
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Trigonal Planar

- Three regions of negative charge on the central atom, all are bonding with no lone pairs.

- 120 degree bond angle.

<p>- Three regions of negative charge on the central atom, all are bonding with no lone pairs.</p><p>- 120 degree bond angle.</p>
5
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Trigonal Pyramid

- Four regions of negative charge on the central atom, three bonding and one lone pair.

- 109 degree bond angle

<p>- Four regions of negative charge on the central atom, three bonding and one lone pair.</p><p>- 109 degree bond angle</p>
6
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T-Shaped

- Five regions of negative charge on the central atom, four bonding and two lone pairs.

- 90 degree bond angle

<p>- Five regions of negative charge on the central atom, four bonding and two lone pairs.</p><p>- 90 degree bond angle</p>
7
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Tetrahedral

- Four regions of negative charge on the central atom, all are bonding with no lone pairs.

- 109 degree bond angle

<p>- Four regions of negative charge on the central atom, all are bonding with no lone pairs.</p><p>- 109 degree bond angle</p>
8
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See-saw

- Five regions of negative charge on the central atom, four bonding and one lone pair.

- Both 90 degree and 120 bond angles

<p>- Five regions of negative charge on the central atom, four bonding and one lone pair.</p><p>- Both 90 degree and 120 bond angles</p>
9
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Square Planar

- Six regions of negative charge on the central atom, four bonding and two lone pairs.

- 90 degree bond angle

<p>- Six regions of negative charge on the central atom, four bonding and two lone pairs.</p><p>- 90 degree bond angle</p>
10
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Trigonal Bipyramidal

- Five regions of negative charge around the central atom, five bonding and no lone pairs.

- Both 90 and 120 bond angles

<p>- Five regions of negative charge around the central atom, five bonding and no lone pairs.</p><p>- Both 90 and 120 bond angles</p>
11
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Square Pyramid

- Six regions of negative charge around the central atom, five bonding and one lone pair.

- 90 degree bond angle

<p>- Six regions of negative charge around the central atom, five bonding and one lone pair.</p><p>- 90 degree bond angle</p>
12
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Octahedral

- Six regions of negative charge around the central atom, six bonding and no lone pairs.

- 90 degree bond angles

<p>- Six regions of negative charge around the central atom, six bonding and no lone pairs.</p><p>- 90 degree bond angles</p>

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