The observed line spectra of electrically excited gas samples tend to support the notion that electron energies are quantized.

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Quizplus · Accepted Answer

The observed line spectra of electrically excited gas samples can only be explained by the quantization of electron energies. This is because electrons in atoms can only occupy certain energy levels, and when they transition between levels, they emit or absorb energy in the form of photons with specific wavelengths. These wavelengths result in the observed line spectra. Therefore, the observation of line spectra supports the notion that electron energies are quantized.

The Observed Line Spectra of Electrically Excited Gas Samples Tend