Question

Question 13.19 Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?

Class XI Hydrocarbons Page 397

Answer 1

As you know, Benzen is a aromatic compound in which all C - atoms are sp² hybridized , and delocalization of 6π electrons , due to this Benzene acts as electron - rich compound. so, it attracts the electrophilic reagent ( electron seeking species or electron deficient species ) towards itself but repel nucleophilic reagents { nucleus seeking species or electron rich species }
That's why Benzen gives electrophilic substitution reactions easily and nucleophilic substitution reaction with difficulty.