Chemical reaction of ozone formation Share with your friends Share 0 Nahla answered this UV rays splits the oxygen molecule(O2) into 2 free oxygen atoms(O). One of these atoms react with oxygen molecule to form ozone(O3). O2-->O+O O+O2=O3 2 View Full Answer Divyansh Kataria answered this O2 into O + O.. Then O + O2 = O3 -1 Rajeswari Suri answered this 👍 -1