Name the particles moving around the nucleus.

Ernest’s experiments on scattering alpha particles when bombarded with thin gold foil led to the creation by Rutherford of a planetary model of the atomic structure, which replaced Thomson’s theory. The planetary theory is called because it is similar to the rotation of planets around a star.

According to this theory, an atom consists of a positively charged nucleus. The nucleus is small, but almost all the mass of the atom is concentrated in it. Negatively charged electrons revolve around the nucleus, which are held in orbit by electrostatic forces.