Question

the correct order of electron affinity among the following is
(A) F > CI > Br
(B) Br > CI >F
(C) CI > F > Br
(D) F > Br > CI

Answer 1

Answer:

Cl>F>Br>I

Explanation:

Since the atomic size increases down the group, electron affinity generally decreases (At < I < Br < F < Cl). An electron will not be as attracted to the nucleus, resulting in a low electron affinity. However, fluorine has a lower electron affinity than chlorine. This can be explained by the small size of fluorine, compared to chlorine.