The Balmer series of hydrogen spectrum appears in the
Correct answer: D. Visible region
- A. Infrared region
- B. Ultraviolet region
- C. X-ray region
- D. Visible region
Explanation
Balmer transitions all end on the second energy level, and those energy gaps correspond to visible photons, which is why these are the hydrogen lines seen through a laboratory spectroscope. The Lyman series ends on the ground state and lies in the ultraviolet because its gaps are larger, while Paschen and the higher series fall in the infrared. Identifying the level a series ends on tells you its region immediately.
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About Atomic Spectra
Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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