Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy) is.
Text Solution
Verified by ExpertsThe correct answer is:
C
Electron gain enthalpy becomes less negative on moving down a group due to increase in atomic size. However, the electron gain enthalpy of F is less negative than that of Cl due to electron – electron repulsion in small sized F atom. Thus, the correct order is:
F < Cl > Br >I 
-328 -349 - 325 -295
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