Q. 7

Among halogens, t A. F > Cl > Br > I

B. F < Cl < Br < I

C. F < Cl > Br > I

D. F < Cl < Br < I

Answer :

As we go down a group electron gain enthalpy decreases but in case of chlorine and fluorine, fluorine has a smaller size due to which it faces inter electronic repulsions. So, electron gain enthalpy of fluorine is less than that of chlorine.

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