Estimation Hartree - Fock's energy for the carbon atom and the ions are similar

In this paper, was used the technique of fragmentation to analyze the systems studied based on the energy of repulsion between electronic pairs. The energy of Hartree - Fock was calculated for the carbon atom (C) and the similar ions (N⁺¹) and (O⁺²), When the results of the energies compared with the global publications we found a large agreement also studied the atomic properties by using atomic units. (paper)