Question

Which of the following elements has the maximum electron affinity?

• A. $I$
• B. $Br$
• C. $Cl$
• D. $F$

Answer 1

The correct option is C $Cl$

Among the halogens the electron affinity value of $F$ should be maximum. But due to small size there is inter-electronic repulsion thus, there is difficulty in entry of new electrons. Thus, the electron affinity value is slightly lower than chlorine and the order is $I<Br<F<Cl$.