VSEPR
Vertices
Two
A
B
2
Three
A
B
3
A
B
2
X
Four
A
B
4
A
B
3
X
A
B
2
X
2
Five
A
B
5
A
B
4
X
A
B
3
X
2
A
B
2
X3
Six
A
B
6
A
B
5
X
A
B
4
X
2
A
B
3
X
3
A
B
2
A
4