Question

how many total orbitals are within the 3s, 3p, and 3d sublevels of the third energy level?
a. 8
b. 4
c. 9
d. 1

Explanation:

Step1: Determine orbitals in 3s

The s - sub - level has 1 orbital. So, the 3s sub - level has 1 orbital.

Step2: Determine orbitals in 3p

The p - sub - level has 3 orbitals. So, the 3p sub - level has 3 orbitals.

Step3: Determine orbitals in 3d

The d - sub - level has 5 orbitals. So, the 3d sub - level has 5 orbitals.

Step4: Calculate total orbitals

Add the number of orbitals in each sub - level: $1 + 3+5=9$.

Answer:

C. 9