each element has its own emission and absorption lines. what is the best explanation for this?\no each…

each element has its own emission and absorption lines. what is the best explanation for this?\no each element has a specific number of protons and neutrons.\no each element has a distinct number of electrons.\no each element has a unique set of physical characteristics.\no each element has unique energy levels.
Answer
Brief Explanations:
Emission and absorption lines are related to electron transitions between energy levels. Each element has a unique set of energy - level arrangements for its electrons. When electrons move between these levels, they emit or absorb photons of specific energies, creating characteristic lines.
Answer:
Each element has unique energy levels.