Resonance Structures

1
Resonance Structures

• Molecules that cant be correctly represented by
  a single Lewis diagram.
• Actual structure is an average of all the
  possible structures.
• Examples O3 and SO3

2
Resonance Structures

• Consider the two ways to draw ozone (O3)
• The two possible structures are separated by a
  double-headed arrow.

3
Resonance Structures

• SO3