How many types of orbitals are in energy level three?

In energy level three, there are four types of orbitals: s, p, d, and f. Specifically, the 3s and 3p orbitals are available, as well as the 3d orbitals, which start to fill at this energy level. The 3f orbitals do not exist in the third energy level; they begin in the fourth energy level. Thus, the total number of orbital types at energy level three is three: s, p, and d.