JEE Main 2012 — Classification of Elements and Periodicity in Properties Question with Solution
JEE Main 2012 (26 May Online)
Question
Which of the following presents the correct order of second ionization enthalpies of and ?
Choose an option
Show full solutionCorrect option: D
Correct answer
DO F N C
Step-by-step explanation
In a period the value of ionisation potential increases from left to right with breaks where the atoms have some what stable configuration. After removing an oxygen will acquire stable configuration. Hence has highest second ionisation enthalpy than and .
correct order is
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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.