Molecule shapes and degrees

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15 Terms

1
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Linear molecule

2 electron pairs around a central atom

180 degrees

<p>2 electron pairs around a central atom</p><p></p><p>180 degrees</p>
2
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Trigonal planar

3 electron pairs around a central atom (all bonded)

120

<p>3 electron pairs around a central atom (all bonded)</p><p></p><p>120</p>
3
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Bent

3 electron pairs around a central atom (one pair of lone bonded)

120

<p>3 electron pairs around a central atom (one pair of lone bonded)</p><p></p><p>120</p>
4
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tetrahedral

4 electrons pairs around a central atom

109.5

<p>4 electrons pairs around a central atom</p><p></p><p>109.5</p>
5
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trigonal pyramidal

4 electrons pairs around a central atom (1 lone pair)

107

<p>4 electrons pairs around a central atom (1 lone pair)</p><p></p><p>107</p>
6
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bent tetrahedral

4 electrons pairs around a central atom (2 lone pairs)

104.5

<p>4 electrons pairs around a central atom (2 lone pairs)</p><p></p><p>104.5</p>
7
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trigonal bypyramidal

5 electron pairs around a central atom

120 and 90

<p>5 electron pairs around a central atom</p><p></p><p>120 and 90</p>
8
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Seesaw

5 electron pairs around a central atom (1 lone pair)

102 and 87

<p>5 electron pairs around a central atom (1 lone pair)</p><p></p><p>102 and 87</p>
9
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Distorted T

5 electron pairs around a central atom (2 lone pairs)

87.5

<p>5 electron pairs around a central atom (2 lone pairs)</p><p></p><p>87.5</p>
10
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octahedral

6 electron pairs around a central atom

90

<p>6 electron pairs around a central atom</p><p></p><p>90</p>
11
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square pyramidal

6 electron pairs around a central atom (1 lone pair)

81.9 and 90

<p>6 electron pairs around a central atom (1 lone pair)</p><p></p><p>81.9 and 90</p>
12
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square planar

6 electron pairs around a central atom (2 lone pairs)

90

<p>6 electron pairs around a central atom (2 lone pairs)</p><p></p><p>90</p>
13
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what does a solid line represent in a molecule diagram

A solid line represents a bond that is in the same plane as the central atom (the nitrogen atom)

14
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what does a solid wedge represent in a molecule diagram

A solid wedge represents a bond that is coming out of the plane, towards the viewer.

15
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what does a dashed wedge represent in a molecule diagram

A dashed wedge (or a series of dashes) represents a bond that is going into the plane, away from the viewer.