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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