will rate!

Think of it this way:

At n=3

l can have values = 2, 1, 0

ml can have values = -2, -1, 0, 1, 2. These describe the 5d orbitals. So for l=-1 orbital (one of the 5d orbitals), how many electrons can fit there?

Does that help?

How many electrons in the following atom can have this set of quantum numbers? n=3 m = -1 2 5 O 6