JEE Main 2020Chemistrys Block ElementsMediumMCQ

JEE Main 2020s Block Elements Question with Solution

JEE Main 2020 (08 Jan Shift 2)

Question

The radius of the second Bohr orbit, in terms of the Bohr radius, a0, in Li2+ is:

Choose an option

Show full solutionCorrect option: C
Correct answer
C4a03

Step-by-step explanation

Radius of Bohr's orbit is given as,

r=a0n2Z

n = orbit number

Z = atomic number

For 2nd Bohr's orbit of Li 2+

Li2+,r=a0223=4a03

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About this question

This is a previous-year question from JEE Main 2020, covering the s 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.