Which of the following is involved in the depletion of ozone layer in the upper atmosphere?

Question

Quizplus · Accepted Answer

Chlorine radicals (Cl) and other halogens, such as bromine (Br), are the primary agents involved in the depletion of ozone layer in the upper atmosphere. These radicals come from human-made sources such as chlorofluorocarbons (CFCs) and halons that were widely used in refrigeration, air conditioning, and as aerosol propellants. When CFCs and halons reach the upper atmosphere, they break down due to ultraviolet radiation and release chlorine and bromine radicals that can destroy the ozone molecules. Fluorine and oxygen radicals are not directly involved in the depletion of ozone layer. Ozone radicals can actually help protect the ozone layer by reacting with and neutralizing chlorine and other radicals.

Which of the Following Is Involved in the Depletion of Ozone