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Chemistry 21 Online
OpenStudy (anonymous):

What is the total number of orbitals associated with the principle Quantum number n = 3

OpenStudy (rogue):

In the 3rd energy level, there is 1 3s orbital, 3 3p orbitals, and 5 3d orbitals, so there is a total of 9 orbitals. Or you can just do # orbitals = n^2. 3^2 = 9.

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