Class 11 NEET Chemistry Classification Of Elements And Periodicity In Properties

Among the halogens the electron affinity value of ' F‌' ‌ should be maximum. But due to small size the 7 -electrons in its valence shell are much more crowded, so that it feels difficulty in entry of new electrons. Thus, the E.A. value is slightly lower than chlorine and the order is
I<Br<F<Cl