Allowed Transition from 2s^2 to 2p^2 in Hydrogen: Why is it Missing?

[barnflakes]

Why is there no allowed transition from the $2s^2 S_{\frac{1}{2}}$ state to the $2p^2 P_{\frac{3}{2}}$ state in the attached image? It seems to fulfill the selection rules $\Delta l = \pm 1$ and $\Delta j = 0, \pm 1$. This is for electric dipole transitions by the way.

 

[DrDu]

I guess that only optical transitions are shown in the diagram while this transition would be somewhere in the radio frequency region.