Question

question 3 of 10
how many total orbitals are within the 3s, 3p, and 3d sublevels of the third energy level?

a. 8

b. 1

c. 4

d. 9

Explanation:

Step1: Recall orbital counts per sublevel

• \(s\) sublevel: 1 orbital (regardless of \(n\), here \(3s\) has 1 orbital).
• \(p\) sublevel: 3 orbitals (any \(np\) sublevel, so \(3p\) has 3 orbitals).
• \(d\) sublevel: 5 orbitals (any \(nd\) sublevel, so \(3d\) has 5 orbitals).

Step2: Sum the orbitals

Total orbitals = Orbitals in \(3s\) + Orbitals in \(3p\) + Orbitals in \(3d\)
Total orbitals = \(1 + 3 + 5\)
Total orbitals = \(9\)

Answer:

D. 9