JEE Main 2019 — d and f Block Elements Question with Solution
JEE Main 2019 (12 Apr Shift 2)
Question
The pair that has similar atomic radii is:
Choose an option
Show full solutionCorrect option: A
Correct answer
A and
Step-by-step explanation
Among the given pairs Mo and W have the same atomic radius of and this is due to Lanthanoid contraction.
This happens due to the poor screening ability of 4f electrons. The radius of other pairs are:
This happens due to the poor screening ability of 4f electrons. The radius of other pairs are:
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This is a previous-year question from JEE Main 2019, 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.