principal quantum numbers
n = 1, 2, 3, 4, 5
Shell is the group of its orbitals with the same value of n.
Angular momentum quantum number
a subshell of the group of orbitals with the same value of n and l.
l=0, 1, 2, 3, (n1)
s, p, d, f
Therefore there are n subshells in one shell
Magnetic quantum numbers
m(l)= l, l+1, l+2, absolute