What is the correct reactivity order towards for para-substituted halonitrobenzenes ()? — Haloalkanes and Haloarenes Chemistry Question

💡 Solution & Explanation

In the $S_NAr$ addition-elimination mechanism, the initial attack of the nucleophile is the rate-determining step. Fluorine is the most electronegative, creating the largest partial positive charge on the target carbon, which leads to the fastest nucleophilic addition.