The smallest particle of an element is called an atom.
The smallest particle in the atom is the electron.
An atom is the smallest particle of a substance.
An atom is a particle, the smallest particle that can exist by itself.
An atom of iron is the smallest particle of iron.
No, for all elements the smallest particle that can exist independently is an atom.
atom is the smallest particle of matter
An atom
Electron
the atom
This particle is called atom.
A Higgs-Boson particle.