Yes / no, is the following a verifiable fact?
"Electrons play an essential role in numerous physical phenomena, such as electricity, magnetism, chemistry and thermal conductivity, and they also participate in gravitational, electromagnetic and weak interactions."
Chain of thought and solution for this question is:
Electrons belong to the first generation of the lepton particle family and are generally thought to be elementary particles because they have no known components or substructure.
So, the answer is yes.