Answer:
Mixing of oxygen, halogens and A element.
Step-by-step explanation:
Molecular oxohalides also known as oxyhalides are the type of chemical compounds in which both oxygen and halogen atoms are attached to another chemical element. Oxyhalides have the general formula i.e. AOmXn, in this formula X refers to F, Cl, Br, I, O refers to oxygen atom and A refers to main group element, a transition element or an actinide. These three elements combine together forming oxyhalides.