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What is an energy level?

a. The region outside the nucleus where an electron is likely to be moving.
b. The region inside the nucleus where an electron is located.
c. The region outside the nucleus where a proton is likely to be moving.
d. The region outside the nucleus where a neutron is likely to be moving.

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neyy96

Answer:

A. The region outside the nucleus where an electron is likely to be moving.

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Answer:

Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. Electrons are tiny, negatively charged particles in an atom that move around the positive nucleus at the center. Energy levels are a little like the steps of a staircase. You can stand on one step or another but not in between the steps. The same goes for electrons. They can occupy one energy level or another but not the space between energy levels.

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