There isn't one single formula for chlorofluorocarbons (CFCs). They are a group of compounds with varying numbers of carbon, chlorine, fluorine, and sometimes hydrogen atoms. Here's a breakdown:

* General Formula: C_xCl_yF_zH_n

* "x" represents the number of carbon atoms.

* "y" represents the number of chlorine atoms.

* "z" represents the number of fluorine atoms.

* "n" represents the number of hydrogen atoms (optional).

Examples of CFCs:

* CFC-11: CCl₃F (Trichlorofluoromethane)

* CFC-12: CCl₂F₂ (Dichlorodifluoromethane)

* CFC-13: CClF₃ (Chlorotrifluoromethane)

* CFC-113: C₂Cl₃F₃ (1,1,2-Trichloro-1,2,2-trifluoroethane)

Key Points:

* No hydrogen atoms: CFCs typically have no hydrogen atoms.

* Chlorine and Fluorine: The key characteristic is the presence of chlorine and fluorine.

* Variety of Structures: There are many different combinations of these elements, leading to a variety of CFC structures.

Let me know if you have any more questions!