Why do elements show an emission spectrum of discrete lines rather than a continuous spectrum of emitted light?

  Quick Atomic spectra are continuous because the energy levels of electrons in atoms are quantized. The electrons in an atom can have only certain energy levels. ... Each packet of energy corresponds to a line in the atomic spectrum. There is nothing between each line, so the spectrum is discontinuous.

Explanation:

Atomic spectra are continuous because the energy levels of electrons in atoms are quantized.

Explanation:

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