CBSE Class 9 Answered

Dear Student

 Homolytic clevage of a bond leads to formation of radicals.

An atom or group of atoms carrying an unpaired electron, which is therefore highly reactive and often impossible to purify or keep for any length of time, are radicals. Examples chlorine radical in chlorination reaction, methyl radical, etc.

Ozone is a radical, as are some of the chlorine compounds that are liberated from organic pollutants and start the chain reactions that ultimately damage the ozone shield. 

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