A student has prepared a cobalt complex that has one of the following three structures: [Co(NH₃)6]Cl₃, [Co(NH₃)5Cl]Cl₂, or [Co(NH₃)4Cl₂]Cl. Explain how the student would distinguish between these possibilities by an electrical conductance experiment. At the student's disposal are three strong electrolytes- NaCl, MgCl₂, and FeCl₃- which may be used for comparison purposes.
