JEE Main Chemistry question

Chemistry Classification of Elements and Periodicity in Properties JEE Main

The electron gain enthalpies of F, Cl, O and S are , , and kJ/mol (not in the same order). What is the numerical value for sulphur?

Answer: 200

Solution

Among halogens, Cl has the most negative electron gain enthalpy () because F's very small size causes extra electron-electron repulsion, lowering its magnitude to . Similarly, among O

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Question ID VK-133877