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The third line of the Balmer series in the emission spectrum of the hydrogen atom is due to the transition from the

Options

  1. Afourth Bohr orbit to the first Bohr orbit
  2. Bfifth Bohr orbit to the second Bohr orbit
  3. Csixth Bohr orbit to the third Bohr orbit
  4. Dseventh Bohr orbit to the third Bohr orbit

Correct answer

B. fifth Bohr orbit to the second Bohr orbit

Step-by-step solution

Rydberg's formula for calculation of wave numbers of lines in hydrogen spectrum is v ̄ = R 1 n 1 2 - 1 n 2 2 For Balmer series, n 1 = 2 and n 2 = 3,4 , 5 , so third line of the Balmer series is due to transition from fifth Bohr orbit to second Bohr orbit.

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