JEE Main 2021ChemistryClassification of Elements and Periodicity in PropertiesEasyMCQ

JEE Main 2021 — Classification of Elements and Periodicity in Properties Question with Solution

JEE Main 2021 (25 Jul Shift 2)

Question

The ionic radii of F- and O2- respectively are 1.33 A and 1.4A, while the covalent radius of N is 0.74A 

The correct statement for the ionic radius of N3- from the following is :

Choose an option

Show full solutionCorrect option: B
Correct answer
BIt is bigger than O2- and F-

Step-by-step explanation

F-,O2- and N3- all are isoelectronic species in which N3- have least number of protons due to which it's size increases as least nuclear attraction
is experienced by the outer shell electrons. Size order N3->O2->F-

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About this question

This is a previous-year question from JEE Main 2021, 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.