While conducting an experiment on coordination compounds, Shirin observed a white precipitate when…

While conducting an experiment on coordination compounds, Shirin observed a white precipitate when $\text{AgNO}_3$ solution was added to the aqueous solution of the complex $[\text{Co}(\text{NH}_3)_3(\text{en})\text{SO}_4]\text{Cl}$. How can the ionisation isomer of this complex be detected by a chemical test? Write the structure and the IUPAC name of the ionisation isomer.