A Level Chem Effect of lone pairs on the shape of molecules

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8 Terms

1
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Are lone pairs stronger then bonding pairs?

Yes they are stronger

2
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What effect does the lone pair have on the shape of a molecule?

It decreases the the degrees of the bond angels in the shape

3
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By how many degrees does the lone pair decrease the bond angel by?

2.5o

4
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If a lone pair is present in a linear shape what is the resulting bond angel?

177.5

5
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If a lone pair is present in a trigonal planar what is the resulting bond angle?

117.5

6
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If a lone pair is present in a tetrahedral what is the resulting degrees of the shape?

107

7
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What happens when there are two lone pairs in a shape?

The bond angle decreases by 5o

8
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What is the name given to a tetrahedral with 2 lone pairs?

A non-linear or V-shaped