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The electron.
A colloid is not a subatomic particle.
The electrons, specifically the valence (outer shell) electrons.
particle whose dimensions is less then that of atom are said to be subatomic particle . they may be charged or uncharged .eg neutron is uncharged subatomic particle where as electron ,proton , positron are charged subatomic particle.
Subatomic particle
This particle is the proton.
Proton
The electron.
MEOW.
The proton.
proton
neutron
The number of protons is determining the element
In the chemical reactivity of atoms electrons are involved.
The number of protons determines what is the element.
The number of protons in an atom determines which element it is (i.e Silver-47 protons vs. Gold-79 protons)
A colloid is not a subatomic particle.