Electron

An electron is a subatomic particle carrying a negative electric charge, found in every atom.

In the atom

Electrons move around the nucleus of an atom in regions called shells or orbitals. The number and arrangement of electrons determine how an element behaves chemically.

Electricity

The flow of electrons through a conductor is what we call an electric current, making electrons central to electricity and electronics.

Discovery

The electron was discovered by J. J. Thomson in 1897, the first subatomic particle to be identified.

Frequently asked questions

What is an electron?

A negatively charged particle in an atom.

Who discovered the electron?

J. J. Thomson, in 1897.