Question

9cw1
how many energy sublevels are in the second principal energy level?
1
3
2
4

Explanation:

In atomic structure, the principal energy level \(n\) determines the number of sublevels. The formula for the number of sublevels in a principal energy level is equal to \(n\). For the second principal energy level (\(n = 2\)), the sublevels are \(s\) and \(p\). So there are 2 sublevels.

Answer:

2