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Chemistry > Shape Of Moelcules > Flashcards

Shape Of Moelcules Flashcards

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1
Q

What are a pair of electrons in a covalent bond called ?

A

Bonding pairs

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2
Q

What are electron pairs ?

A

Clouds of negative charge so there is mutual repulsion pulling them as far away from each other as possible.

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3
Q

What is the valence sheel electron pair repulsion theory ?

A

Electron pairs repel eachother to get as far away from eachother. They want to gain the greatest separation for minimum repulsion.

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4
Q

What type of substances does the valence sheet electron pair repulsion theory apply to ?

A

Simple covalent molecules only

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5
Q

What are bond angles ?

A

The angle between 2 covalent bonds

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6
Q

How many and what type of bonds does a linear molecule have ?

A

2 bonding pairs

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7
Q

How many and what type of bonds does a trigonometry planar molecule have ?

A

3 bonding pairs

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8
Q

How many and what type of bonds does a tetrahedral molecule have ?

A

4 bonding pairs

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9
Q

How many and what type of bonds does a triagonal bipyramid have ?

A

5 bonding pairs

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10
Q

How many and what type of bonds does an octahedral molecule have ?

A

6 bonding pairs

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11
Q

How many and what type of bonds does a bent molecule have ?

A

2 bonding pairs and one lone pair

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12
Q

How many and what type of bonds does a triagonal pyramidal molecule have ?

A

3 bonding, one lone pair

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13
Q

How many and what type of bonds does a square planar have ?

A

4 bonding pairs and 2 lone pairs.

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14
Q

What bond angle is in a linear molecule ?

A

180 degrees

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15
Q

What bond angle is in a triagonal planar ?

A

120 decrees

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16
Q

What is the bond angle of a tetrahedral ?

A

109.5 degrees

17
Q

What is the bond angle in a triagonal bipyramid ?

A

90 degrees and 120 degrees

18
Q

What are the bond angles in an octahedral molecule ?

A

90 degrees

19
Q

What are the bond angles of a bent molecule ?

A

117.5 degrees

20
Q

What is the bond angle of a triagonal pyramidal ?

A

107 degrees

21
Q

What is the bonding angle of a square planar ?

A

90 degrees

22
Q

What is repulsion order and what does this mean.

A

LP-LP>LP-BP>BP-BP

Two lone pairs bonding has the strongest repulsion.
Two bonding pairs bonding has he weakest repulsion.

23
Q

How does the presence of lone pairs affect bond angles ?

A

Reduces the bond angle.

24
Q

What will happen if more lone pairs are in a molecule ?

A

The bond angle will become smaller.

25
Q

What is a molecule with 2 bonding pairs called.

A

Linear

26
Q

What is a molecule with 3 bonding pairs called ?

A

Triagonal planar

27
Q

What is a molecule with 4 bonding pairs called ?

A

Tetrahedral

28
Q

What is a molecule with 5 bonding pairs called ?

A

Triagonal bipyramid

29
Q

What is a molecule with 6 bonding pairs called ?

A

Octaheadral

30
Q

What is a molecule with 2 bonding pairs and 1 lone pair called ?

A

Bent

31
Q

What is a molecule with 3 bonding pairs and 1 lone pair called ?

A

Triagonal bipyramid

32
Q

What is a molecule with 4 bonding pairs and 2 lone pairs called ?

A

Square planar

Chemistry (27 decks)

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