Question

which subatomic particle is the smallest?
protons
neutrons
electrons
rewatch

Explanation:

Electrons are much smaller than protons and neutrons. Protons and neutrons are located in the nucleus of an atom and have similar masses. Electrons, on the other hand, are in the electron cloud surrounding the nucleus and have a mass that is about 1/1836 of the mass of a proton or neutron.

Answer:

electrons