Molecular Geometry Flashcards
1
Q
Valence-Shell Electron Pair Repulsion (VESPR)
A
Groups of valence electrons are located as far as possible to minimize repulsions
2
Q
Electron group (steric number)
A
Any number of electrons that occupies a localized region around an atom
3
Q
What determines molecular shape?
A
Electron group arrangement
4
Q
Bond angle
A
Angle formed by the 2 nuclei of 2 surrounding atoms with the nucleus of the central atom
5
Q
A
Trigonal planar
120º bond angles
6
Q
A
Bent (angular)
<120º bond angle
7
Q
SN=3
A
Trigonal planar
8
Q
SN=2
A
Linear
9
Q
SN= 4
A
Tetrahedral
10
Q
A
Linear
180º
11
Q
A
Tetrahedral Trigonal pyramidal
<109.5º
12
Q
A
Tetrahedral bent (angular)
<109.5º
13
Q
SN= 5
A
Trigonal Bipyramidal
14
Q
A
Trigonal Bipyramidal
-90º
-120º
15
Q
A
Seesaw
<90º
<120º
16
Q
A
T-Shaped
<90º
18
Q
A
Octahedral
90°
19
Q
A
Square Pyramidal
<90°
20
Q
A
Square Planar
90°
