Final answer:
The particle that orbits the center of an atom is the electron, which has a negative charge. Protons and neutrons make up the atom's nucleus, with protons being positively charged and neutrons being neutral.
Step-by-step explanation:
The subatomic particle that revolves around the central part of an atom is called an electron. Atoms are made up of three types of subatomic particles: electrons, protons, and neutrons. The nucleus, which is at the center of the atom, consists of protons and neutrons, known collectively as nucleons. The protons carry a positive charge, while the neutrons are neutral. In contrast, electrons, which have a negative charge, orbit the nucleus and are primarily responsible for the chemical behavior of atoms.