An atomic orbital has n = 3. What are the possible values of l and m1?

(i) The possible values of l and m1 are:
For n = 3, l can be 0, 1, or 2.
If l = 0, m1 = 0
If l = 1, m1 = -1, 0, +1
If l = 2, m1 = -2, -1, 0, +1, +2
(ii) The quantum numbers (m1 and l) of electrons for 3d orbital are l = 2, m1 = -2, -1, 0, +1, +2
(iii) 2s, 2p orbitals are possible.