Question

module 4: electrons in atoms test - 11/14/2025
the fourth principal energy level has
16 orbitals.
32 orbitals
9 orbitals.
4 orbitals.

Explanation:

Step1: Recall formula for number of orbitals

The number of orbitals in a principal energy level \(n\) is given by \(n^{2}\).

Step2: Substitute \(n = 4\)

When \(n = 4\), we calculate \(n^{2}=4^{2}=16\).

Answer:

16 orbitals.