Chapter 10 Flashcards

1
Q

prediction of the molecules geometry from the electrostatic repulsion between the electrons

A

Valence Shell Electron Pair Repulsion (VSEPR)

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2
Q

Molecular Geometry of two electron pairs

A

Linear

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3
Q

Molecular geometry of 3 electron pairs

A

Trigonal planar

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4
Q

Molecular geometry of 5 electron pairs

A

Trigonal bipyramidal

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5
Q

Molecular Geometry of 6 electron pairs

A

Octahedral

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6
Q

Molecular Geometry of 2 bonding pairs and 1 lone pair

A

Bent

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7
Q

Molecular geometry of 3 bonding pairs and 1 lone pair

A

Trigonal pyramidal

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8
Q

Molecular geometry of 2 bonding pairs and 2 lone pairs

A

Bent

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9
Q

Molecular Geometry of 4 bonding pairs and 1 lone pair

A

Distorted tetrahedron or seesaw

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10
Q

Molecular Geometry of 3 bonding pairs and two lone pairs

A

T-shaped

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11
Q

Molecular geometry of 2 bonding pairs and 3 lone pairs

A

Linear

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12
Q

Molecular Geometry of 5 bonding pairs and 1 lone pair

A

Square pyramidal

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13
Q

Molecular geometry of 4 bonding pairs and 2 lone pairs

A

Square planar

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14
Q

MGG is…

A

Molecular Group Geometry

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15
Q

EGG is…

A

electron group geometry

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16
Q

We want to keep the electrons far away from each other to avoid…

A

repulsion

17
Q

In the class of molecule, what do these letters represent A, B, E

A

A is the atom, B is the bonding group, and E is the electron pair

18
Q

In EGG, do we consider the electrons the same as atoms? Hence, we count the electrons as an atom.

A

Yes

19
Q

Use … to signify that is behind in a 3d representation

A

Dashes

20
Q

Use … to signify it is upfront in a 3d representation

A

Solid black line

21
Q

A lone pair is always pulling it away, causing it to…

A

bent and lose angle

22
Q

Blue means…

A

electron poor

23
Q

Red means…

A

electron rich

24
Q

Dipole moment is equal to…

A

charge x distance

25
Q

If the molecules have a dipole moment it is…

A

polar/polar covalent bond

26
Q

A Linear has a bond angle of…

A

180

27
Q

A trigonal planar has a bond angle of..

A

120

28
Q

A tetrahedral has a bond angle of…

A

109.5

29
Q

A trigonal bipyramidal has bond angles of…

A

90 and 120

30
Q

An octahedral has a bond angle of…

A

90

31
Q

A square pyramidal has a bond angle of…

A

90

32
Q

A square planar has a bond angle of..

A

90

33
Q

A trigonal pyramidal has a bond angle of…

A

109.5

34
Q

A T-shaped has bond angles of…

A

90

35
Q

Bent has a bond angle of…

A

109.5

36
Q

Predicting molecular geometry

A
  1. Draw lewis structure for molecule
  2. Count number of lone pairs on the central atom and number of atoms bonded to the central atoms
  3. Use VSEPR to predict the geometry of the molecule