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The energy levels of the hydrogen spectrum is shown in the figure. There are some transitions A , B , C , D and E . Transition A , B and C respectively represent

Options

  1. AFirst member of Lyman series, third spectral line of Balmer series and the second spectral line of Paschen ser
  2. BIonisation potential of hydrogen, second spectral line of Balmer series and third spectral line of Paschen ser
  3. CSeries limit of Lyman series, third spectral line of Balmer series and second spectral line of Paschen series.
  4. DSeries limit of Lyman series, second spectral line of Balmer series and third spectral line of Paschen series.

Correct answer

C. Series limit of Lyman series, third spectral line of Balmer series and second spectral line of Paschen series.

Step-by-step solution

Whenever transition is from n = ∞ , it is called the series limit. In the transition A from n = ∞ to n = 1 . So, series limit and here, it is to n = 1 . So, part of the Lyman series. In transition B , the transition is till n = 2 . So, part of the Balmer series and is from n = 5 . So, third spectral line of its Balmer series. From n = 3 to n = 2 ⇒ First spectral line of Balmer series. n = 4 to n = 2 ⇒ Second spectral line of Balmer series. So, n = 5 to n = 2 ⇒ Third spectral line of Ba

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