Explain the following terms ; (I) Azimuthal quantum number
(ii) Spin quantum number
l describes the ellipiticity of the orbit
s describes the spin of the electron about its axis. It is either +1/2 h/2*pi or -1/2 h/2*pi
(ii) Spin quantum number
s describes the spin of the electron about its axis. It is either +1/2 h/2*pi or -1/2 h/2*pi