There has been some controversy regarding the possibility of halogen-bridged radicals, analogous to chloronium and bromonium cations. For example, it was suggested that the chloroethyl radical might be better represented by the bridged structure 3 instead of the open- chain structure 2. Suggest how EPR spectroscopy could distinguish between the two. Indicate clearly what you would expect to see in the EPR spectra of each of the two species. (In fact, EPR experiments were carried out and supported structure 2.) H 2 3