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How energy generated by chemical reactions can be converted into light energy in terms of the behavior of electrons? Does a compound that emits red light would require more energy than a compound that emits a violet light?
Answer 1:

Electrons have energy states in atoms, which exist at set levels of energy as determined by the laws of quantum mechanics. When a chemical reaction occurs, the electrons change energy states, and if the energy released is in the form of light, then the energy of the photons emitted will be equal to the difference in the energy states the electrons are moving. Violet light is more energetic than red light, so requires more energy.



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