Electrons orbit around the nucleus.
In an uncharged atom the number of electrons orbiting the nucleus equals the number of protons in the nucleus. The atom is primarily empty space. If the nucleus of an atom was the size of the button on a baseball pitcher's cap, the electrons would be like dust particles revolving around the outside of the baseball stadium at nearly the speed of light. . If you have Web-related problems, contact our Webmaster . If you are lost, see our site map .