Answer the following question given this paragraph: Electrons at lower energy levels, which are closer to the nucleus, have less energy. At the lowest energy level, which has the least energy, there is just one orbital, so this energy level has a maximum of two electrons. Q: What happens to the energy levels of electrons as they are closer to the nucleus? A:

Choose your answer from:
(a). they are higher.
(b). they balance.
(c). they divide.
(d). they are lower.
The answer is:
(d).