The electron and the outermost electrons' orbital radius.
The number of protons determines what is the element.
neon
The atom is the smallest part of matter that represents a particular element. For quite a while, the atom was thought to be the smallest part of matter that could exist. But in the latter part of the 19th century and early part of the 20th, scientists discovered that atoms are composed of certain subatomic particles and that, no matter what the element, the same subatomic particles make up the atom. The number of the various subatomic particles is the only thing that varies. Scientists now recognize that there are many subatomic particles (this really makes physicists salivate). But in order to be successful in chemistry, you really only need to be concerned with the three major subatomic particles: Protons Neutrons Electrons
An isotope is defined as: Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element So basically, an isotope is from the same place (element) and has the same number of protons, but the number of electrons differ. So isotopes are not subatomic; the protons and electrons that make an isotope are subatomic.
protons, neutrons and electrons are the main subatomic particles of the atom. There are the same number of protons as electrons, which is equal to the atomic number. The number of neutrons may vary according to the isotope of the element.
The simplest form of an element is an atom. Subatomic particles are not a form of the element; they are a "building block" of an element.
element
Assuming that you mean the chemical properties, the electrons are what define each element. If you meant subatomic particles, then it doesn't matter; each subatomic particle has unique characteristics.
The atom is the smallest part of matter that represents a particular element. For quite a while, the atom was thought to be the smallest part of matter that could exist. But in the latter part of the 19th century and early part of the 20th, scientists discovered that atoms are composed of certain subatomic particles and that, no matter what the element, the same subatomic particles make up the atom. The number of the various subatomic particles is the only thing that varies. Scientists now recognize that there are many subatomic particles (this really makes physicists salivate). But in order to be successful in chemistry, you really only need to be concerned with the three major subatomic particles: Protons Neutrons Electrons
The number of protons determines what is the element.
the proton
The protons and neutrons.
Iron is an element..it is made up of subatomic particles.
neon
An atom and an element are synonyms. Rather, subatomic particles make up atoms (and elements). The three types of subatomic particles are neutrons, protons, and electrons.
atoms which have the same properties of that element
Subatomic particles are the same for all substances that exist everwhere. So to ask "What are the subatomic particles of manganese?" is really not a good question. Manganese is an element. And like all elements, it is made up of atoms. Atoms are made up of.......subatomic particles! (Moledule)(Cation)(Ion)===>Element====>Atom====>Subatomic particle The are three basic subatomic particles: protons, electrons and neutrons. If you really want to get anal about it, you can also find out what neutrons are made up of. I would tell you, but I forgot!