Question

9cw1
how does the energy of an electron change when the electron moves closer to the nucleus?
it increases.
it doubles.
it stays the same.
it decreases.

Explanation:

Electrons in an atom have energy levels. When an electron moves closer to the nucleus, it moves to a lower - energy orbital. This is because the electrostatic attraction between the negatively - charged electron and the positively - charged nucleus is stronger at closer distances, and the electron is in a more stable (lower - energy) state.

Answer:

It decreases.