In an ozone molecule, the three atoms must be connected, so there must at least be a single bond between them. Place dots in pairs around the oxygen atoms until each oxygen atom has eight valence electrons, starting with the atoms on the outside and doing the central atom last if there are enough. Do not exceed the total number of valence electrons identified in part A. Remember that the dashes between the oxygen atoms, which represent single bonds, each indicate the presence of two valence electrons.