  Structural properties and the decay modes of the superheavy elements Z $=$
122, 120, 118 are studied in a microscopic framework. We evaluate the binding
energy, one- and two- proton and neutron separation energy, shell correction
and density profile of even and odd isotopes of Z $=$ 122, 120, 118 (284 $\leq$
A $\leq$ 352) which show a reasonable match with FRDM results and the available
experimental data. Equillibrium shape and deformation of the superheavy region
are predicted. We investigate the possible decay modes of this region
specifically $\alpha$-decay, spontaneous fission (SF) and the $\beta$-decay and
evaluate the probable $\alpha$-decay chains. The phenomena of bubble like
structure in the charge density is predicted in $^{330}$122, $^{292,328}$120
and $^{326}$118 with significant depletion fraction around 20-24$\%$ which
increases with increasing Coulomb energy and diminishes with increasing isospin
(N$-$Z) values exhibiting the fact that the coloumb forces are the main driving
force in the central depletion in superheavy systems.
