protons and neutrons are about 1 amu
If you mean subatomic particle as in protons neutrons and electrons, electrons have the lowest mass. If you are talking even smaller, leptons have extremely tiny rest masses.
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.
The electron is a subatomic particle that has a charge of -1.
A negatively charged subatomic particle is an electron, or the antiproton.
The electron is the subatomic particle with a negative charge.
The number of neutrons is different for each isotope.
The number of neutrons is different for each isotope.
it is located around an atom orbiting it
The subatomic particle with a negative charge is called an electron.