Atomic Spectra

The Balmer series in the hydrogen atom spectrum corresponds to the transitions of electrons from higher energy levels to the second energy level ( ). These transitions produce light in the visible region of the electromagnetic spectrum. The wavelengths of these lines fall in the visible range, which is why they are observable as distinct colors in the spectrum. Thus, the correct answer is Option (A).

The Lyman series in the hydrogen spectrum corresponds to transitions where electrons fall from higher energy levels to the first energy level ( ). The wavelengths of these transitions are in the ultraviolet region of the electromagnetic spectrum. Hence, the Lyman series lines fall within the ultraviolet range. Thus, the correct answer is Option (C).

The Paschen series corresponds to transitions where the electron falls from higher energy levels to the n = 3 energy level in a hydrogen atom. The emitted radiation from these transitions falls in the infrared (IR) region of the electromagnetic spectrum.