The elements Z=117 and 120 have not yet been discovered. In which family / group would you place these elements and also give the electronic configuration in each case.

Explanation

The element which Z=117, would belong to the halogen family (group 17) and the electronic configuration would be `[Rn]4f^(14)5d^(10)7s^(2)7p^(5)`. The element with Z=120 , will be placed in group 2 (alkaline earth metals), and will have the electronic configuration `["Uuo"]8s^(2)`.