JEE Main 2012 — Classification of Elements and Periodicity in Properties Question with Solution
JEE Main 2012 (12 May Online)
Question
Which among the following elements has the highest first ionization enthalpy?
Choose an option
Show full solutionCorrect option: A
Correct answer
ANitrogen
Step-by-step explanation
Due to stable configuration. (half filled -orbital) Nitrogen atom has highest energy.
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This is a previous-year question from JEE Main 2012, 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.