JEE Main 2020ChemistryStructure of AtomEasyMCQ

JEE Main 2020Structure of Atom Question with Solution

JEE Main 2020 (08 Jan Shift 1)

Question

For the Balmer series, in the spectrum of H atom, v-=RH1n12-1n22, the correct statements among I to IV are,
I As wavelength decreases, the lines in the series converge.
II The integer n1 is equal to 2/
III The lines of the longest wavelength correspond to n2=3.
IV The ionization energy of hydrogen can be calculated from the wave number of these lines.

Choose an option

Show full solutionCorrect option: B
Correct answer
BI,II,III

Step-by-step explanation

I, II and III option is correct.

ν-=RH1n121n22

For balmer series, n1=2

For the longest wavelength, V¯,

n2=3.

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About this question

This is a previous-year question from JEE Main 2020, covering the Structure of Atom 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.