The total number of possible isomers for the coordination compound $[Cu^{II}(NH_3)_4][Pt^{II}Cl_4]$ is.....

Which of the following ligands can show linkage isomerism?

Among $VO_2^{+}$,$MnO_4^{-}$ and $Cr_2O_7^{2-}$,the spin-only magnetic moment value of the species with least oxidising ability is $BM$ (Nearest integer). (Given atomic number $V=23$,$Mn=25$,$Cr=24$)

Which of the following complex ions will exhibit optical isomerism? ($en = 1, 2$-diamine ethane).

Which of the following complex ions is diamagnetic in nature?

An octahedral complex with molecular composition $M \cdot 5NH_3 \cdot Cl \cdot SO_4$ has two isomers,$A$ and $B$. The solution of $A$ gives a white precipitate with $AgNO_3$ solution and the solution of $B$ gives a white precipitate with $BaCl_2$ solution. The type of isomerism exhibited by the complex is