Azimuthal quantum number

Azimuthal quantum number
( Angular quantum number):
This quantum number tells of subshell in a shell. it is denoted by (l) .it value 0 to (n-1) .
value of l name of sub shell

if n=1 l= 0 s
n=2 l =0, 1 sp
n=3 l=0, 1,2 spd
n=4 l=0, 1,2,3 spdf

no. of subshell in a shell is given by = n

Magnitic quantum number : this no. tells us no. of orientations or orbitals in a subshell. it is denoted by (m). it can have value from -l to +l and including zero.
value of m no. of orbitals
if l=0 m=0 1(s)
l= 1 m=-1, 0,1 3(p)
l=2 m=-2, -1, 0,1,2 5(d)
l=3 m=-3, -2, -1, 0,1,2,3 7(f)

no. of orbitals in a shell = 2n-1

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