Question

The ground-state valence-shell configuration of a particular atom is 4d105s2 5p1 . The element to which this atom belongs is aA) noble gas. B) inner transition element. C) p-block main-group element. D) transition element. E) s-block main-group element.

Answer 1

ground-state valence-shell configuration of a particular atom is 4d105s2 5p1 = Indium(In)

valency electronic configuration is similar to nS^2nP^1.

so that it is a p-block main-group element = 3rd group