# Of what three particles is all matter composed?

Do you mean $\text{of what three particles is matter composed?}$
$\text{protons, neutrons, and electrons.}$
Electrons are negatively charged particles of negligible mass, that are conceived to orbit around a nuclear core containing massive particles of protons, particles of positive electronic charge, and neutrons, particles of NEUTRAL electronic charge. At internuclear distances, $< \left(2 - 4\right) \times {10}^{-} 15 \cdot m$ (impossibly small!), these massive particles engage in the strong nuclear force, which binds the nucleus together.