It is an atom. More specifically, it would be a cation - which is an atom which has "lost" one or more electrons and so is less than an atom.
An atom is the smallest particle in matter with unique chemical properties. Each element is characterized by the number of protons in its nucleus, which determines its chemical behavior.
The smallest particle of matter is called an atom. It is the basic unit of a chemical element and retains the properties of that element.
An atom is the smallest unit of matter that can enter into a chemical combination.
This is the definition of a molecule.
A quark is the smallest particle in matter.
The smallest particle of matter having distinctive chemical and physiacl properties; a tiny particle
This particle is the atom.
An atom
an atom
An atom is the smallest particle of an element that can be uniquely identified as that specific element.Note that this question is different from asking "What is the smallest particle in an atom?" (see related question below). Atoms are composed of smaller particles (protons, electrons, and neutrons), but the smallest thing that has the identity of a specific element is the atom.The smallest particle of an element that still retains all that element's properties is called an ATOM.
An atom is the basic unit of matter, consisting of a nucleus composed of protons and neutrons, surrounded by electrons in orbitals. It is the smallest particle of an element that retains the chemical properties of that element. Atoms combine to form molecules and compounds and are the building blocks of everything in the universe.
atom is the smallest particle of matter