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In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter-orbit jumps of the electron for Bohr orbits in an atom of hydrogen

Options

  1. A5 2
  2. B4 1
  3. C2 5
  4. D3 2

Correct answer

A. 5 2

Step-by-step solution

The lines falling in the visible region comprise Balmer series. Hence the third line would be n₁=2, n₂=5 i.e. 5 2

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