The $IUPAC$ name of the complex $[Cr(NH_3)_3(H_2O)_2Cl]Cl_2$ is:

The correct name for the complex ion $[CoCl(ONO)(en)_2]^+$ is

The complex chlorocompound diaquatriammine cobalt $(III)$ chloride is represented as

Write the formulas for the following coordination compounds:
$(i)$ Tetraamminediaquacobalt$(III)$ chloride
$(ii)$ Potassium tetracyanidonickelate$(II)$
$(iii)$ Tris(ethane$-1,2-$diamine)chromium$(III)$ chloride
$(iv)$ Amminebromidochloridonitrito$-N-$platinate$(II)$
$(v)$ Dichloridobis(ethane$-1,2-$diamine)platinum$(IV)$ nitrate
$(vi)$ Iron$(III)$ hexacyanidoferrate$(II)$

What is the oxidation number of gold in the complex $[AuCl_{4}]^{-}$?

The $IUPAC$ name of $[Pt(NH_3)_3(Br)(NO_2)Cl]$ is ......