Which of the following are correct statements about the planetary model of an atom? Choose all correct answers. The atom is made up mostly of empty space. The nucleus of the atom contains all of the particles that make up the atom. The protons in the atom can be easily moved from the nucleus. Protons and electrons are located in the nucleus of the atom and the neutrons circle the nucleus. The electrons orbit the nucleus of the atom. Only protons and neutrons are located in the nucleus of the atom which is at its center