Q. Which one of the following configuration represents a noble gas?
A) $1s^{2},\ 2s^{2}\ 2p^{6},\ 3s^{2}$
B) $1s^{2},\ 2s^{2}\ 2p^{6},\ 3s^{1}$
C) $1s^{2},\ 2s^{2}\ 2p^{6}$
D) $1s^{2},\ 2s^{2}2p^{6},\ 3s^{2}\ 3p^{6},\ 4s^{2}$
Explanation
(c)
$1s^{2}\ 2s^{2}\ 2p^{6} \rightarrow$ Neon
It is noble gas
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.