Molecular scattering differential cross sections have been measured for Ba(CIO4)(2)3H(2)O. Ba(ClO3)(2)H2O. BaCl(2)2H(2)O, Ba(NO3)(2). BaCl2 and BaO compounds at seven angles ranging from 60 degrees to 120 degrees at 10 degrees intervals. Obtained values change in respect of effective atomic numbers for some Ba compounds at 60 degrees and 120 degrees. The obtained results have been compared with non-relativistic and relativistic theoretical values.