Shapes of Molecules Flashcards
1
Q
3 bonding pairs
A
120°
Trigonal planar
2
Q
2 bonding pairs
A
180°
Linear
3
Q
4 bonding pairs
A
109.5°
Tetrahedral
4
Q
3 bonding pairs, 1 lone pair
A
107°
Pyramidal
5
Q
3 bonding pairs, 1 lone pair
A
107°
Pyramidal
6
Q
2 bonding pairs, 2 lone pairs
A
104.5°
Non-linear
7
Q
6 bonding pairs
A
90°
Octahedral
8
Q
Order of repulsion
A
lone pair – lone pair > lone pair – bond pair > bond pair – bond pair
9
Q
Why are lone pairs more repulsive than bonding pairs?
A
- Lone pairs of electrons have a more concentrated electron charge cloud than bonding pairs of electrons.
- The cloud charges are wider and closer to the central atom’s nucleus.
