Which spectral series of the hydrogen atom falls within the ultraviolet region?
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Answer: D. Lymann series
Explanation
The Lyman series comprises hydrogen emission spectral lines resulting from electron transitions to the ground state. Transitions ending at the principal quantum number one release high energy ultraviolet photons. The large energy gaps between the ground state and higher levels produce short wavelength spectral emissions. Atomic hydrogen emission spectra are categorized into distinct series based on the lower energy level. Ultraviolet radiation occupies the electromagnetic spectrum region with wavelengths shorter than visible light. Niels Bohr model of the atom successfully explained discrete spectral line emissions using quantized orbits.
Astrophysicists analyze Lyman series ultraviolet emissions to determine the composition of distant stars and galaxies. Ultraviolet spectroscopy is widely used in analytical chemistry to identify molecular structures and compounds. Understanding hydrogen spectral lines was historically crucial for the development of modern quantum mechanics. Option A corresponds to the Balmer series which emits photons in the visible light region. Option B represents the Pfund series which produces infrared spectral emissions in hydrogen atoms. Option C refers to the Brackett series associated with infrared transitions in atomic physics.
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