Question

The Balmer series of hydrogen spectra lies in:

• A. visible region spectra
• B. ultra violet spectra
• C. infrared region spectra
• D. $\gamma$-rays spectra

Answer 1

The correct option is A visible region spectra

Balmer series lies in the visible region of the electromagnetic spectrum. This series is obtained only in the emission spectrum.

Hence, photons that correspond to these energies will not be strongly absorbed. In highly excited hydrogen gas there is the possibility for detecting absorption at Balmer line wavelengths.

Paschen series lies in the infrared region while Brackett and Pfund lie also in the infrared region.

Only Lyman series lies in the ultraviolet region of the electromagnetic spectrum.