CoNH35BrSO4 and CoNH35SO4Br are the examples of:
linkage isomerism
geometrical isomerism
optical isomerism
ionization isomerism
Both produce different ions in solution state:
CoNH35BrSO4⇌CoNH35Br2++SO42−CoNH35SO4Br⇌CoNH35SO4++Br−