The Root-Mean-Square (RMS) nuclear charge, neutron and proton radii, charge, neutron and proton densities, neutron skin thickness and total binding energy per particle were calculated using the Hartree-Fock method with Skyrme forces for the chromium (Cr), copper (Cu) and beryllium (Be) isotopes. The obtained results were compared with the experiment. Additional to these calculations the initial neutron and proton exciton numbers for Cr-52 isotope were also calculated. These exciton numbers can be used for pre-equilibrium proton induced (p, xn) reactions on Cr-52 isotope. (C) 2009 Elsevier Ltd. All rights reserved.