  In this paper we review the different relativistic and QED contributions to
energies, ionic radii, transition probabilities and Land\'e $g$-factors in
super-heavy elements, with the help of the MultiConfiguration Dirac-Fock method
(MCDF). The effects of taking into account the Breit interaction to all orders
by including it in the self-consistent field process are demonstrated. State of
the art radiative corrections are included in the calculation and discussed. We
also study the non-relativistic limit of MCDF calculation and find that the
non-relativistic offset can be unexpectedly large.
