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How do the electron reflect the light in a particular frequency and direction? How many of the electrons do reflect the light in one atom?
Question Date: 2019-04-13
Answer 1:

I think instead of "reflecting" light, electrons in an atom actually "absorb" and "emit" lights at certain frequency and wavelength.

Inside an atom, our daily intuition about "particles" does not really apply. The behavior of electrons in an atom should be described by quantum mechanics, which dictates that the electrons can only have certain discrete energies. So when the photon of light carries precisely the energy that equals to the difference between the two energy levels of an electron, the electron will absorb this photon, and jump to another energy level; meanwhile, the electron can also jump back to the original energy level, and emit the light with certain frequency.

Answer 2:

It's usually the chemical bonds that reflect light, or, even more often, electrons that are partially "free" and able to jump from one atom to another. What happens is that the electrons absorb the photons (light particles), which changes their energy state, and then the electron drops back to its lower energy state, emitting the same energy photon and thus the same color back away.

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