Q. The number of electrons accommodated in an orbit with principle quantum number 2, is
A) 2
B) 6
C) 10
D) 8
Explanation
(d)
The number of electrons =$2n^{2}$
where, $n =$principal quantum number.
For $n = 2$
Number of electrons $= 2(2)^{2} = 8$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.