Atomic Number

Definition

The atomic number is equal to the number protons found in an atom's nucleus. It defines what element an atom is and its place on the periodic table.

Related terms

Protons:

Positively charged particles found in the nucleus of an atom.

Electrons:

Negatively charged particles that orbit around the nucleus of an atom.

Neutrons:

Neutral particles (no charge) found in the nucleus of an atom.