An iron atom is the smallest iron particle that still has the properties of iron.
This particle is the atom.
An atom is the smallest particle that comprises a chemical element.Source:http://en.wikipedia.org/wiki/Atom
In the atom the particle without electrical charge is the neutron.
An atom is the smallest particle of a substance.
An atom is a particle, the smallest particle that can exist by itself.
The smallest particle of an element is called an atom.
The atom is the smallest known particle.
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In the atom the particle without electrical charge is the neutron.
There is no such thing as a neutron atom. A neuton is a particle that exists within the nucleus of an atom.
This particle from the atom is the electron.
The smallest particle in the atom is the electron.
An iron atom is the smallest iron particle that still has the properties of iron.
the positivly charged particle in the nuclus of an atom is a proton
This particle is the atom.
This particle is the neutron.