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What is a Proton?

December 3, 2025

A proton is a tiny particle found inside the nucleus (center) of an atom.
It has a positive (+) electric charge, and it helps decide what kind of element an atom is.

  • Hydrogen has 1 proton
  • Helium has 2 protons
  • Carbon has 6 protons

Protons, along with neutrons, make the atom’s core, and electrons move around them.

In short:
➡️ Proton = small particle inside an atom with a positive charge
➡️ It decides the identity of the atom