What should be the atomic number of the next inert gas if discovered in future ?

What would be the atomic number of the next halogen if discovered in future-

Atomic number of next inert gas to be discovered will be

What is the atomic number of the next halogen if discovered ?

Rn (Z=86) is the last noble gas discovered. Predict what wil be the atomic number of the next noble gas to be discovered. Write its symbol.

Rn (Z=86) is the last noble gas discovered . Predict what will be the atomic number of the next noble gas to be discovered . Write its symbol.

He is an inert gas