When the principal quantum number (n = 3) , the possible values of azimuthal quantum number (l) is

When the value of principal quantum number n is 3 the permitted value of azimuthal quantum numbers l and magnetic quantum numbers 'm' are l = 0, 1, 2 m = 0, +1,0,-1, +2,+1,0,-1,-2
For a given value of the principal quantum number, the azimuthal quantum number l can values 0,1 ,2....n-1.
For a given value of azimuthal quantum number, the magnetic quantum number m can take values −l,...−2,−1,0,+1,+2.....+l