In the framework of finite range density functional theory, we have in
vestigated the ground state properties and collective excitations of H
e-3(N) drops doped with inert gas atoms and SF6 molecules. As in the H
e-4(N)+SF6 case, the dipole energies of these drops go smoothly to zer
o as a function of N, indicating that the impurity is located in the b
ulk of the drop.