Q. The electronic configuration of four elements are given below. Which element does not belong to the same family?
A) $\lbrack Xe\rbrack 4f^{14}5d^{10}6s^{2}$
B) $\lbrack Kr\rbrack\ 4d^{10}5s^{2}$
C) $\lbrack Ne\rbrack 3s^{2}3p^{5}$
D) $\lbrack Ar\rbrack\ 3d^{10}4s^{2}$
Explanation
(c)
In order to belong with the same family, the outer configuration must be the same
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.