Assign the position of the element having outer electronic configuration.
(b) `(n-1)d^(2)ns^(2)for n = 4`

Assign the position of the element having outer electronic configuration (n - 1) d^(2)ns^(2) for n = 4 in the periodic table.

Assign the position of the element having outer electronic configuration. (a) ns^(2) np^(4) for n = 3

Assign the position of the element having outer electronic configuration (n - 1 ) d^2ns^2 for n = 4

Assign the position of the element having outer electronic configuration : (i) ns^(2) np ^(4) for n =3 (ii) (n-1)d ^(2) ns ^(2) for n =4 (iii) (n -2) f ^(7) (n -1) d ^(1) ns ^(2) for n =6 in the periodic table.

Assign the position of the element having outer electronic configuration (i) ns^(2) np^(2) for n = 2 (ii) (n-1) d^(5) ns^(1) for n = 4 , and (iii) (n-2) f^(14) (n-1) d^(0) ns^(2) for n = 6 in the Modern periodic table.

Assign the position of the element having outer electronic configuration (i) ns^(2) np^(2) for n = 2 (ii) (n-1) d^(5) ns^(1) for n = 4 , and (iii) (n-2) f^(14) (n-1) d^(0) ns^(2) for n = 6 in the Modern periodic table.