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JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 5 April 2024, Shift 1, Chemistry Q81

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

The value of Rydberg constant (

\mathrm{R_H}

) is

2.18 \times 10^{-18}

J. The velocity of electron having mass

9.1 \times 10^{-31}

kg in Bohr's first orbit of hydrogen atom = ________

\times 10^5

ms

^{-1}

(nearest integer).

Official answer

22

NTA final key.

Chapter: Structure of Atom
Topic: Bohr's Atomic Theory
Idea tested: Electron Velocity in Orbit

Same idea in other shifts

Asked 2× in all

26 Aug 2021, Shift 1 · Q32Given below are two statements : Statement I : According to Bohr's model of an atom, qualitatively the magnitude of velocity of electron…MediumTwo statements

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.