JEE Main 2013 — Classification of Elements and Periodicity in Properties Question with Solution
JEE Main 2013 (09 Apr Online)
Question
Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to :
Choose an option
Show full solutionCorrect option: C
Correct answer
CSmaller size of fluorine atom
Step-by-step explanation
The electron gain enthalpy order for halogens is
Due to small size of fluorine the extra electron to be added feels more electronelectron repulsion. Therefore fluorine has less value for electron affinity than chlorine.
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This is a previous-year question from JEE Main 2013, covering the Classification of Elements and Periodicity in Properties chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.