Question

the elements z=117and 120 have not been discovered. in which group do they belong and their electronic configuration?

Answer 1

Atomic number = 117
Element = Ununseptium
Electronic configuration = [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁵​
Group number = 17

Atomic number = 120
Element = Unbinilium
Electronic configuration =[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁶ 8s²
Group number = 2