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What is an electron?

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Quick answer

An electron is a tiny, negatively charged particle that orbits the nucleus of an atom. Electrons are responsible for chemical bonding and the flow of electricity, making them central to chemistry, electronics, and life itself. It's a tiny, negatively charged subatomic particle.

Key things to understand

  1. It's a tiny, negatively charged subatomic particle.
  2. Electrons surround an atom's nucleus.
  3. Their movement is what we call electric current.
  4. They drive chemical bonds and reactions.

People also ask

What is an electron?
A tiny, negatively charged particle that orbits an atom's nucleus and carries electric current.
What do electrons do?
They form chemical bonds and, when they flow, create the electricity that powers our devices.
Are electrons smaller than atoms?
Yes — electrons are far smaller and lighter than the atoms whose nuclei they orbit.