Validity of B-splines as a universal basis set for atomic Hartree-Fock-Roothaan calculations

The validity of B-splines as a universal basis set for atomic Hartree-Fock-Roothaan calculations is studied. In order to accomplish our aim, the ground-state energies of neutral atoms He-Xe, cations Li+-Xe+, and anions H--I- with the nuclear charge Z less than or equal to 54 are calculated by the Hartree-Fock-Roothaan method with the B-spline sets. All radial functions of the atoms and singly charged ions are expanded by common B-spline sets regardless of atomic systems and symmetries of atomic orbitals. The energies obtained by the best B-spline set are in excellent agreement with ten-digit numerical Hartree-Fock results.