Question

arrange the halogens in decreasing oder of electronegativity​

Answer 1

Decreasing order of electro-negativity of halogens is F, Cl, Br, I. Fluorine has highest electronegativity among all the known elements.

hopes

Answer 2

Halogens are Chlorine, Fluorine, Bromine, Iodine

These are arranged in a group in the order F, Cl, Br, I

Down the group, metallic character increases. So electronegativity decreases.

In the decreasing order of their electronegativity, the elements are:

F > Cl > Br > I