The reactions that Benzene undergoes Watch
Can I write that under std conditions Substitution rxns occur instead of addition rxns ? Because addition rxns can occur.
In essence, the benzene ring is very stable and breaking it is thermodynamically unfavourable
Electrophilic substitution reactions maintain the benzene ring, as opposed to electrophilic addition reactions which render it broken, and so the latter is unfavourable
All in all, the stability of the ring resists electrophilic addition reactions (unless you have particular addition reactions at particular conditions)