Question

Which of the elements has the greatest electron affinity among the halogens?

Answer 1

• Halogens have high electron affinity. Because they have a greater tendency to tendency to gain an additional electron to change into stable configuration.
• Among halogens, electron affinity decreases from Chlorine(Cl) to iodine(I).
• However, electron affinity of chlorine is unexpectedly higher than that of fluorine(F).
• The size of F is is less compared to Cl.
• The addition of electron on F produces high electron charge density and results strong electron- electron repulsion.
• The repulsive force results in low electron affinity
• The element with greatest electron affinity among halogens is Chlorine.