The Electron, because it is the number of electrons that really determines chemical behavior.
Neucleus, Proton and electrons
The center of an atom is made up of two particles: protons and neutrons. Protons have a positive electric charge, while neutrons have no charge. Together, they make up the nucleus of an atom.
air,mater
Protons, neutrons, and electrons.
Protons and neutrons are the two subatomic particles that make up the nucleus of an atom.
electron
The particles in the nucleus of an atom are the protonsand the neutrons. We call particles that make up the atomic nucleus nucleons, and this word is just a way to say "the particles that make up an atom's nucleus" in an abbreviated manner.
Sub-atomic particles are even smaller particles that make make an atom
the particles that makes up an atom are protons neurons electrons among which electrons are the smallest.
Dalton discovered the particles that make the atom and the atom itself
These particles are: neutron, proton, electron.
This is the number of protons.
Neucleus, Proton and electrons
An Atom. It's the world's smallest particles of matter, atom's is known to be 20 times smaller than an average coffee bean.
Protons and neutrons.
Protons and neutrons
atom and netrons