BRAINCAKEChlorofluorocarbons and the Environment
Ozone, O3, in the upper atmosphere absorbs much of the Sun's harmful ultraviolet radiation, which can cause skin cancer and cataracts. Chlorofluorocarbons (CFCs) damage this ozone layer.
CFCs are very stable, so they are not broken down in the lower atmosphere. They slowly reach the stratosphere, where ultraviolet light breaks the C-Cl bond by homolytic fission to form chlorine radicals, Cl•.
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More in Halogenoalkanes
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All 16 lessons in Halogenoalkanes · All AQA AS-level Chemistry topics