Question

Which one of the series of hydrogen spectrum is in the visible region?

• A. Lyman series (UV)
• B. Balmer series (Visible)
• C. Paschen series (IR)
• D. P-fund series

Hint:

When studying the hydrogen spectrum, remember that the Balmer series is the only one that falls in the visible region. The other series (Lyman, Paschen, and P-fund) correspond to UV, IR, and IR regions, respectively.

Answer 1

The Correct Option is B

The hydrogen spectrum consists of several series, each corresponding to different regions of the electromagnetic spectrum. These series are categorized based on the transitions of electrons in the hydrogen atom. The key series are: - Lyman series: This series corresponds to transitions where the electron falls to the \( n = 1 \) energy level. These transitions emit ultraviolet (UV) light. - Balmer series: This series corresponds to transitions where the electron falls to the \( n = 2 \) energy level. These transitions emit visible light, which is why the Balmer series is in the visible region of the spectrum. - Paschen series: This series corresponds to transitions where the electron falls to the \( n = 3 \) energy level. These transitions emit infrared (IR) light. - P-fund series: This series corresponds to transitions where the electron falls to the \( n = 5 \) energy level. These transitions also emit infrared light. Therefore, the Balmer series is the only series that lies in the visible region.