Actually, there quarks and mesons. They are the fundamental particles of an atom. Some scientists think that a quark or meson is just a point.
It can be any atom if you have to explain the basic structure of it. But there should be the main parts like the nucleus,shells,protons,neutrons,electrons,etc.
atom
From a chemical perspective, the fundamental unit is the atom.
Is weight a fundamental unit? Please explain Regards
atom
Atom
ATOM
Is weight a fundamental unit? Please explain Regards
protons, neutrons and electrons
Not all of them are; the only direct subatomic part of the atom that is fundamental is the electron (which is a type of lepton.) Only particles made up of no smaller parts are called fundamental particles. For example, the proton (just like the neutron, except with a small difference) is not a fundamental particle because it is made of quarks, which are fundamental particles.
atom is the smallest particle of matter