Question

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, and (iii) (n - 2) f 7 (n - 1)d 1 ns 2 for n = 6, in the periodic table.

Answer 1

1.) it belongs to the 13th group
2.) it belongs to the  14th group
3.)it belongs to the   16th group
            all these elements are placed in modern periodic table .