JEE Main 2019 — Structure Of Atom Question with Solution
From: JEE Main 2019 (Online) 12th January Evening Slot
Question
If the de Broglie wavelength of the electron in nth Bohr orbit in a hydrogenic atom is equal to 1.5 a0 (a0 is Bohr radius), then the value of n/z is -
Choose an option
Show full solutionCorrect option: A
Correct answer
A0.75
Step-by-step explanation
According to debroglie hypothesis,
2rn = n
=
According to the question,
= 1.5 a0
We know,
rn = 0.529
= a0
= 1.5 a0
= 0.75
2rn = n
=
According to the question,
= 1.5 a0
We know,
rn = 0.529
= a0
= 1.5 a0
= 0.75
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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.