Question

General electronic configuration of representative elements is :

• A. $n{s}^1-n{s}^{2}n{p}^5$
• B. $n{s}^{2}n{p}^6$
• C. $n{s}^1-n{s}^{2}n{p}^6$
• D. none of these

Answer 1

The correct option is A $n{s}^1-n{s}^{2}n{p}^5$

The elements of s-block and p-block except noble gases are called representative elements. The general configuration of s-block elements is $n{s}^1-n{s}^2$. And for p-block elements except noble gases is $n{s}^{2}n{p}^1-n{s}^{2}n{p}^5$. Thus combined for representative elements it is $n{s}^1-n{s}^2{p}^5$ i.e., option A.