Final answer:
When an electron moves closer to the nucleus, it must lose energy to maintain stability within an atom.
Explanation:
Electron movement in relation to the nucleus:
According to Bohr's model, when an electron moves closer to the nucleus, it must lose energy in the form of electromagnetic radiation. On the other hand, if the electron moves further from the nucleus, it needs to gain energy. These energy changes are essential for the stability of electron orbits within an atom.
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