Recall the basic structure of an atom, which consists of a nucleus and an electron cloud surrounding it.
Understand that the nucleus contains protons and neutrons, which are tightly packed together at the center of the atom.
Recognize that electrons are found in the electron cloud, which is the region around the nucleus where electrons move in various energy levels or shells.
Note that the valence band or outermost shell refers to the outermost electrons, not protons.
Therefore, protons are located in the nucleus, the central part of the atom.