Question

Which element in the noble gas group as of 2015 has the largest atomic number?

Answer 1

`118` Oganesson

Explanation:

Given: noble gas with the largest atomic number

The noble gasses are in the last column of the periodic table.

Until recently Radon with an atomic number of `86` was the noble gas with the largest atomic number, but atomic number `118` Oganesson has recently (December 2015) been added to the periodic table.