Gas released when the sunlight breaks down cfc is
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The abundance of CFC-11 decreases as the gas reaches higher altitudes, where it is broken down by high energy solar ultraviolet radiation. Chlorine is released from this breakdown CFCs
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Chlorine
When they are exposed to strong ultraviolet light, CFCs finally break down to release lone chlorine atoms with an unpaired electron. These chlorine atoms are highly unstable and react with ozone to break it down into oxygen through a type of chain reaction. A single chlorine atom can react with as many as 100,000 molecules of ozone before it finally combines with another atom to form a stable compound. That's why even small numbers of CFC molecules can destroy large quantities of ozone and remain active in the upper atmosphere for long periods of time.
When they are exposed to strong ultraviolet light, CFCs finally break down to release lone chlorine atoms with an unpaired electron. These chlorine atoms are highly unstable and react with ozone to break it down into oxygen through a type of chain reaction. A single chlorine atom can react with as many as 100,000 molecules of ozone before it finally combines with another atom to form a stable compound. That's why even small numbers of CFC molecules can destroy large quantities of ozone and remain active in the upper atmosphere for long periods of time.
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