what is the total number of orbitals associated with principal quantum no. n =3

1 answer

9
because
3^2 = 9
or because
3 s has 1
3 p has 3
3 d has 5
and 1 + 3 + 5 = 9

Note, each of those orbits can have electrons with spins of + or - 1/2
so total of 18 electrons for n = 3