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Electrons

Definition

Electrons are subatomic particles that have a negative charge and orbit around the nucleus of an atom.

Analogy

Imagine electrons as tiny planets orbiting around the sun (nucleus) in a solar system. Just like planets, electrons move in specific energy levels or shells.

Related terms

Protons: Positively charged subatomic particles found in the nucleus of an atom.

Neutrons: Neutral subatomic particles found in the nucleus of an atom.

Atomic Number: The number of protons in an atom, which determines its identity on the periodic table.

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.