Question

what is the maximum number of electrons in the second principal energy level?
32
18
2
8

Explanation:

The formula to calculate the maximum number of electrons in a principal energy level is \(2n^{2}\), where \(n\) is the principal quantum number. For the second principal energy level, \(n = 2\). Substituting \(n = 2\) into the formula gives \(2\times2^{2}=2\times4 = 8\).

Answer:

8