Answer:
Spectral lines are produced by transitions of electrons within atoms or ions. As the electrons move closer to or farther from the nucleus of an atom (or of an ion), energy in the form of light (or other radiation) is emitted or absorbed.…
Explanation:
Specific lines appear in a line spectrum because produced by transitions of electrons within atoms or ions.
Spectral lines are produced when the electrons undergoes transitions within atoms or ions. When the electrons move far or near to nucleus of any atom, radiation of particular wavelength is emitted or absorbed.
These emitted light is represented as they are moving from one state to the another.
Thus, specific lines appear in a line spectrum because produced by transitions of electrons within atoms or ions.
Learn more about spectral lines.
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