The element X with the electronic configuration 1s2, 2s2, 2p6, 3s2, 3p6 belongs to group 18 (also known as group 8A or the noble gases) of the periodic table.
The element with the electronic configuration 1s2, 2s2, 2p6, 3s2, 3p6 belongs to Group 18 or Group 8A in the periodic table. This group is also known as the noble gases.
