JEE Main 2019ChemistryStructure of AtomMediumMCQ

JEE Main 2019 — Structure of Atom Question with Solution

JEE Main 2019 (09 Jan Shift 1)

Question

For emission line of atomic hydrogen from ni=8 to nf=n, the plot of wave number v- against 1n2 will be: (The Rydberg constant, RH is in wave number unit)

Choose an option

Show full solutionCorrect option: C
Correct answer
CLinear with slope RH

Step-by-step explanation

According to Rydberg's equation,



1λ=v -=RHZ21n12-1n22

Z=1 for H atom

=RH×12(1nf2−182)

v¯=RHnf2−RH64

slope, m=+RH

The curve is linear

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About this question

This is a previous-year question from JEE Main 2019, 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.