Shapes of molecules Flashcards
1
Q
How do you answer a ‘shapes of molecules’ question?
A
State how many regions of electron density
State how many bond pairs
State how many lone pairs
‘Electrons repel as far as possible to minimize repulsion
State bond angle
State shape
2
Q
Non-linear
A
104.5
2 bond pairs
2 lone pairs
3
Q
Linear
A
180
2 bond pairs
4
Q
Tetrahedral
A
109.5
4 bond pairs
5
Q
Square planar
A
90
4 bond pairs
2 lone pairs
6
Q
Octahedral
A
90
6 bond pairs
7
Q
Trigonal pyramidal
A
107
3 bond pairs
1 lone pair
8
Q
Trigonal planar
A
120
3 bond pairs
9
Q
Trigonal bipyramidal
A
120/90
5 bond pairs
