Step-by-step explanation:
The given atom contains in total 18 electrons as electronic distribution is 2, 8 here. Therefore, it means that this atom belongs to group 18.
Since, the outermost shell of this atom has 8 electrons which means that it is a stable atom as it neither needs gain or lose electrons.
Hence, this atom will be unreactive in nature.
Thus, we can conclude that it is true about the atom shown that: