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With ionisation isomers, how do you know which ligand (out of $\ce{Br}$ and $\ce{NH3}$ for example) exchanges with the compound outside the bracket?


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  • $\begingroup$ Well, as net charge is always the same, you are free to exchange any. I do remember water being involved in Cobalt chloride complexes, with change in lattice water. The same must apply for ammonia, too. $\endgroup$ – William R. Ebenezer Feb 4 at 11:54
  • $\begingroup$ Your question is not very clear. Do you mean how to make the difference between the 2 compounds if you have them in 2 different jars? Or do you mean how to study that exchange in a solution? $\endgroup$ – SteffX Feb 4 at 16:14