Write the general outer electronic configuration of s, p, d and f block

Dhanalakshmi · July 3, 2019, 9:41am

Write the general outer electronic configuration of s, p, d and f block elements. Also assign the position of elements having outer electronic configuration as
i) ns² np⁴ for n=3
ii) (n-2) f⁷ (n-1) d¹ ns² for n=6, in the periodic table.

Dhanalakshmi · July 3, 2019, 9:45am

The general outer configuration of s block elements is ns^1-2
p block = ns² p^1-6
d block= (n-1) d^1-10ns^0-2
f block = (n-2) f^1-14(n-1) d^0-1,ns²

i) ns² np⁴ for n=3
Ans) In this case the element belongs to third period of the periodic table as n=3. The group number of the element is 16

ii) (n-2)f⁷ (n-1) d¹ ns² for n=6
Ans) In this case the element belongs to the sixth period of the periodic table. The group is lanthanoid. .