The identity of a chemical element is given by the number protons.
This particle is the proton.
This is the proton.
This is the proton.
The number of protons establishes the elemental identity of an atom.
There is no individual sub-atomic particle that is responsible for the identity of an element. It is the way the electrons, protons and (neutrons) are arranged in an element that gives it it's identity.
A colloid is not a subatomic particle.
The lightest subatomic particle is the electron.
The subatomic particle that has no charge is a neutron.
The subatomic particle with a negative charge is the electron.
A negatively charged subatomic particle is an electron, or the antiproton.
The electron is the subatomic particle with a negative charge.
The electron is a subatomic particle that has a charge of -1.