The Lewis dot structure for ozone is an O with four dots connected to an O with two dots and a plus sign by two lines. The equation ends with an O featuring six dots attached by a singular line to the other oxygen symbols.
The arrangement of the dots, bonds and signs vary depending on the resonance form of ozone, written with the chemical formula O3. In the Lewis dot structure, each dot represents a valence electron, while each line represents a pair of bonded valence electrons. Two lines written together are called a double bond. Two dots together are also known as a lone pair.