According to the current theory or "standard model" of elementary particles, which one of the following is truly an "elementary" particle?
A) electron
B) proton
C) neutron
D) All of the above.
E) None of the above.

Question

Quizplus · Accepted Answer

The electron is considered an elementary particle in the Standard Model, as it is not composed of smaller particles. Protons and neutrons are made up of quarks, which are elementary particles.

According to the Current Theory or "Standard Model" of Elementary