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KVPY2020ChemistryStructure of Atom

If the velocity of the revolving electron of He + in the first orbit ( n = 1 ) is v , the velocity of the electron in the second orbit is:

Options

  1. Av
  2. B0 . 5 v
  3. C0 . 25 v
  4. D2 v

Correct answer

B. 0 . 5 v

Step-by-step solution

For single electron species v n ∝ 1 n v 2 v 1 = n 1 n 2 = 1 2 v 2 = 1 2 v 1 = 1 2 v = v 2 = 0 . 5 v

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