How many d and f orbitals total are present in the n = 4 shell of a hydrogen atom? Enter your answer as a whole number.

12 orbitals

Explanation:

The suborbital = d orbital.

n = 4

The orbital is 4d.

There are 5 degenerate orbitals of d orbitals. Thus m value, - 2, - 1, 0, + 1, + 2.

Thus, number of orbitals = 5

The suborbital = f orbital.

n = 4

The orbital is 4f.

There are 7 degenerate orbitals of f orbitals. Thus m value, - 3, - 2, - 1, 0, + 1, + 2, + 3

Thus, number of orbitals = 7

Total number of orbitals = 7 + 5 = 12