Question

Which of the following series in the spectrum of hydrogen atom lies in the visible region of the electromagnetic spectrum?

• A. Paschen series
• B. Balmer series
• C. Lyman series
• D. Brackett series

Hint:

Remember: Lyman (UV), Balmer (Visible), Paschen/Brackett/Pfund (Infrared).

Answer 1

The Correct Option is B

• The hydrogen spectrum consists of several series: Lyman, Balmer, Paschen, Brackett, and Pfund.
• Among these, only the Balmer series falls in the visible region of the electromagnetic spectrum (wavelengths approximately 400–700 nm).
• The Balmer series corresponds to electron transitions ending at the second energy level ($n=2$).