What are the tiny, negatively charged particles in an atom that move around the positive nucleus at the center?

What are the tiny, negatively charged particles in an atom that move around the positive nucleus at the center?

• Correct Answer: electrons
• neutrons
• protons
• quarks

Explanation: 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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