Question
Assign the position of the element having outer electronic configuration:
(i) ns2np4 for n = 3
(ii) (n-1)d2ns2 for n = 4, and
(iii) (n-2) f7 (n-1)d1ns2 for n = 6, in the periodic table.
Solution
(i) The electronic configuration of the element is 3s23p4. Thus the element belongs to p-block, third period ( ∵ n = 3) and group 16.
(ii) The electronic configuration of the element is 3d2As2. Thus the element belongs to d-block, fourth period (∵ n = 4) and group 4.
(iii) The electronic configuration of the element is 4f7 5d16s2. Thus the element belongs to f-block, sixth period (n = 6) and group 3.
