Question

How will you find out the maximum number of electrons in the main energy level?

• A. $n$
• B. $n^2$
• C. $2n^4$
• D. $2n^2$

Answer 1

Answer: (D)

$2n^2$

The maximum number of electrons in an energy level is given by $2\left(n^2\right)$. Here n is the principle quantum number of the energy level. Thus we have $2\left(1^2\right)=2$ electrons in first orbit and $8$ in second orbit and so on.