The element with atomic number 118, will be

Electronic configuration of element with atomic number 118 will be $\left[\mathrm{Rn}\right]5{\mathrm{f}}^{14}6{\mathrm{d}}^{10}7{\mathrm{s}}^{2}7{\mathrm{p}}^6$. Since its electronic configuration in the outer most orbit (ns²p⁶) resemble
with that of inert or noble gases, therefore it will be noble gas element.