JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 6 April 2024, Shift 1, Chemistry Q81

Question 81 of 90 in this shift, Chemistry question 21 of 30, Section B.

Frequency of the de-Broglie wave of electron in Bohr's first orbit of hydrogen atom is __________

\times 10^{13}

Hz (nearest integer). [Given :

\mathrm{R_H}

(Rydberg constant)

= 2.18 \times 10^{-18}

h

(Plank's constant)

= 6.6 \times 10^{-34}

J.s.]

Official answer

661

NTA final key.

Chapter: Structure of Atom
Topic: Bohr's Atomic Theory
Idea tested: Time Period and Frequency of Electron Revolution

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.