This paper considers correlated form wave function for (C+4- AL+11)ions. . The wavefunction is parametrized by hydrogenic orbital, correlation function, and variationally expansion in r1, r2 andr12.to To this end, We discuss the radial extracule and intracule densities which are defined theprobability of finding the center-of –mass-radius for two electrons and the inter-particle distance,respectively. The moments of the extracule and intracule densities and the radial of two-particle density have studied. we conclude that by increase the atomic number z. the extracule and intracule densities increase and their position close to the nucleus due to the attraction force between the electron and nucleus. Indeed, the moments increase for the exponent parameter=-1 with Z increase, while by increasing, while by increasing Z, the moments decrease for n=1,2.
