  For superheavy elements with atomic numbers $120\leq Z \leq 170$, the concept
of the ground-state configuration is being reexamined. To this end,
relativistic calculations of the electronic structure of the low-lying levels
are carried out by means of the Dirac-Fock and configuration-interaction
methods.The magnetic and retardation parts of the Breit interaction as well as
the QED effects are taken into account. The influence of the relativistic, QED,
and electron-electron correlation effects on the determination of the
ground-state is analyzed.
