How is Electronegativity value in Halogen family?

The electronegativity values of the halogen group is given below.

F = 3.98

Cl = 3.16

Br = 2.96

I = 2.66

At = 2.2

Chlorine has a higher electron affinity than Fluorine. Fluorine is the most electronegative element but still its electron affinity is less than that of chlorine. It is because of the small size of fluorine. The electronegativity of the Halogens decreases as the elements get larger and therefore less reactive.

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