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Chemistry > Shapes of Molecules and Carbon Allotropes > Flashcards

Shapes of Molecules and Carbon Allotropes Flashcards

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1
Q

What are the two reasons for the formation of covalent bonds?

A
  • Share of electrons can make an atom more stable

* Atoms will give away electrons in order to form a noble gas configuration

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2
Q

Why do electron pairs repel when bonding to a central atom?

A

They have the same negative charge

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3
Q

How many pairs of electrons does a linear shaped molecule have?

A

2

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4
Q

How many pairs of electrons does a trigonal planar shaped molecule have?

A

3

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5
Q

How many pairs of electrons does a tetrahedral shaped molecule have?

A

4

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6
Q

How many pairs of electrons does a trigonal bipyramidal shaped molecule have?

A

5

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7
Q

How many pairs of electrons does an octahedral shaped molecule have?

A

6

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8
Q

What is the bond angle of a linear shaped molecule?

A

180 degrees

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9
Q

What is the bond angle of a trigonal planar shaped molecule?

A

120 degrees

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10
Q

What is the bond angle of a tetrahedral shaped molecule?

A

109.5 degrees

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11
Q

What is the bond angle of a trigonal bipyramidal shaped molecule?

A

90 degrees and 120 degrees

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12
Q

What is the bond angle of an octahedral shaped molecule?

A

90 degrees

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13
Q

What is the bond angle of a BeCl2 molecule?

A

180 degrees

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14
Q

What is the bond angle of a BCl3 molecule?

A

120 degrees

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15
Q

What is the bond angle of a CH4 molecule?

A

109.5 degrees

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16
Q

What is the bond angle of a NH3 molecule?

A

120 degrees

17
Q

What is the bond angle of a NH4 molecule?

A

109.5 degrees

18
Q

What is the bond angle of an H2O molecule?

A

180 degrees

19
Q

What is the bond angle of a CO2 molecule?

A

180 degrees

20
Q

What is the bond angle of a gaseous PCl5 molecule?

A

90 degrees and 120 degrees

21
Q

What is the bond angle of a SF6 molecule?

A

90 degrees

22
Q

What are dative covalent bonds?

A

Bonding that occurs when both electrons in a covalent bond come from the same atom

Chemistry (10 decks)

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