How do delocalized electrons participated in organic reactions
A delocalized electron is an electron that is spread over more than one atom bond.
If I understand the question correctly, it can't be answered simply on a forum. Pick up a good book on organic chemistry.
Electrons are delocalized due to resonance. The way they participate in reactions will depend on the structure of the reactants, and the intermediate steps involved in a particular reaction. There are too many ways to describe here.
When an electron is associated with more than single atom or single covalent bond. Delocalisation can have different meaning as well. It can be easily seen in an effect called resonance.
Yes, I meant bond, not atom, in my post. Chemical bonding necessarily implies "delocalization" over more than one atom
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