  Using the orbitals generated by the van Leeuwen-Baerends potential, we
calculate frequency dependent response properties of noble gas atoms of He, Ne
and Ar and alkaline earth atoms Be and Mg, with particlar emphasis on their
nonlinear polarizabilities. For this we employ time-dependent Kohn-Sham
formalism with adiabatic local-density aproximation (ALDA) for exchange and
correlation. We show that results thus obtained for frequency dependent
polarizabilities of the inert gas atoms are highly acurate. On the other hand,
polarizabilities of the alkaline earths are not given with the same accuracy.
In light of this, we make an assessment of ALDA for obtaining linear and
nonlinear response properties by employing time-dependent density-functional
theory.
