JEE Main 2012 — d and f Block Elements Question with Solution
JEE Main 2012 (07 May Online)
Question
The -electron configurations of and are and respectively. Which one of the following will exhibit the lowest paramagnetic behaviour?
(Atomic no. ).
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Since has lowest no. of unpaired electrons hence lowest paramagnetic behaviour is shown by
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This is a previous-year question from JEE Main 2012, covering the d and f Block Elements 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.