The decreasing order of magnitude of electron gain enthalpy in halogens is

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F > Cl > Br > I

F < Cl < Br < I

F < Cl > Br < I

Cl > F > Br > I

answer is D.

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Detailed Solution

Due to small size and inter electronic repulsions, Fluorine has lesser EGE than expected ;Cl > F > Br > I ;

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