KVPY 2019 SB SX Exam Previous Papers

The octahedral complex$\mathit{C}\mathit{o}\mathit{S}{\mathit{O}}_4\mathit{C}\mathit{l}.5\mathit{N}{\mathit{H}}_3$ exists in two isomeric forms X and Y. Isomer reacts AgNO${}_3$ to give a white precipitate, but does not reach with BaCl${}_2$. Isomer Y give white precipitate with BaCl${}_2$ but does not react with AgNO${}_3$.
Isomers X and Y are