The oxidation state of the metal in the complex ion $[PtCl_6]^{2-}$ is....

Identify the formula of Bis(ethylenediamine)dithiocyanatoplatinum$(IV)$.

The $I.U.P.A.C.$ name of ${K_3}[Ir({C_2}{O_4})_3]$ is

Provide the $\text{IUPAC}$ nomenclature for the following coordination compounds:
$(i)$ $[Cr(NH_3)_3(H_2O)_3]Cl_3$
$(ii)$ $[Co(en)_3]_2(SO_4)_3$
$(iii)$ $[Ag(NH_3)_2][Ag(CN)_2]$
$(iv)$ $Na_3[Cr(C_2O_4)_3]$

The $IUPAC$ name of the complex $Hg[Co(CNS)_4]$ is

Which of the following is a wrong statement?