For such elements, the wave function of the Dirac ground state is oscillatory rather than bound, and there is no gap between the positive and negative energy spectra, as in the Klein paradox.
For sådanne grundstoffer bliver Dirac-grundtilstandens bølgefunktion oscillerende snarere end bundet, og der er intet hul mellem de positive og negative energispektra, som i Klein-paradokset.