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Question

Which of the following series of transitions in the spectrum of hydrogen atoms fall in the visible region?


A

Lyman series

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B

Brackett series

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C

Balmer series

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D

Paschen series

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Solution

The correct option is C

Balmer series


Explanation for the correct options:

(C)Balmar series

  • Balmar series falls under the visible region in the hydrogen spectrum.
  • Spectral emission takes place when electron transitions take place from a high-energy level to a lower energy level of n1=2 energy state.

Explanation for the incorrect options :

(A)Lyman series

  • The Lyman series wavelength falls in the ultraviolet band and this is displayed when the electron transition takes place from higher energy states to n1=1 energy state.

(B)Brackett series

  • In the Brackett series, the wavelength falls in the Infrared region of the electromagnetic spectrum and this is displayed when the electron transition takes place from higher energy states to n1=4 energy state.

(D)Paschen series

  • The Paschen series wavelength falls in the Infrared region of the electromagnetic spectrum and this is displayed when the electron transition takes place from higher energy states to n1=3 energy state.

Hence, option (C) is correct, Balmer series transitions in the spectrum of hydrogen atoms fall in the visible region.


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