Consider the following
I. The electron spin quantum number describes the orientation of the spin of the nucleus with respect to the magnetic field.
II. The orbitals represented by the quantum numbers n=3, l=2, m=+2 and n=3, l=2, m=-2  have the same energy
III. The energy of a photon is directly proportional to wavelength but inversely proportional to wave number.
IV. Lyman series of lines appear in ultra –violet region.
The correct statements are