Question

The electron affinity values for the halogens
show the following trend​

Answer 1

Answer:

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.

Explanation:

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Answer 2

Explanation:

Electron affinity increases in a period and decreases in a group. But, fluorine atom, due to its small size cannot release high amount of energy. Hence, among halogens, chlorine atom has high value of electron affinity and the order is Cl>F>Br>I.