The reaction in which one or more hydrogen atoms of a hydrocarbon are replaced by some other atom is called substitution reaction Substitution reaction are the characteristic property of a saturated hydrocarbon (alkanes).
Example: Methane reacts with chlorine in the presence of sunlight to form chloromethane and HCI.
Example:When chlorine gas (Cl2) is irradiated, some of the molecules are split into two chlorine radicals (Cl•) whose free electrons are strongly nucleophilic.
: There are two types of substitution reactions: nucleophilic and electrophilic. These two reactions differ in the type of atom that is attaching to the original molecule.
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: There are two types of substitution reactions: nucleophilic and electrophilic. These two reactions differ in the type of atom that is attaching to the original molecule.