It is an atoms chemical properties that determine whether it is iron or manganese or aluminium. These properties are (to a first approximation) controlled by the number of electrons in the outermost shell.
A single atom is the smallest unit that has the chemical properties.
Anything smaller is electrons or protons, or neutrons ... .
An iron atom is the smallest iron particle that still has the properties of iron.
An atom is the smallest particle of a substance.
This particle is the atom.
The smallest particle of an element in chemistry is an atom. Atoms are made up of protons, neutrons, and electrons.
A quark is the smallest particle in matter.
An iron atom is the smallest iron particle that still has the properties of iron.
An atom of iron is the smallest particle of the element iron.
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.
No, for all elements the smallest particle that can exist independently is an atom.
atom is the smallest particle of matter
Electron
An atom
the atom
A Higgs-Boson particle.