Step 1: Understand what resonance means. Resonance occurs when a molecule can be represented by two or more valid structures that differ only in the arrangement of electrons.
Step 2: Identify the molecule in question, which is ozone (O3).
Step 3: Draw the Lewis structure of ozone. It has three oxygen atoms connected in a way that shows double and single bonds.
Step 4: Notice that the double bond can be between different pairs of oxygen atoms, leading to different structures.
Step 5: Realize that the actual structure of ozone is a hybrid of these different forms, meaning the electrons are delocalized.
Step 6: Conclude that because of this delocalization of electrons, ozone exhibits resonance.