JEE Chemistry · Hard

Atomic Structure: Bohr velocity MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Bohr velocityHardQuestion 600229

Question

The velocity of an electron in the nth orbit of hydrogen is proportional to:
  1. A
    n
  2. B
    1/n
    Correct
  3. C
  4. D
    1/n²

Correct answer

1/n

Explanation

From Bohr's quantisation: v = Ze²/(nħ) ∝ 1/n. As n increases, orbital radius grows and speed decreases.