The correct $IUPAC$ name of $cis-$platin is

The oxidation number of iron in potassium ferrocyanide is

Which one of the following is tris(ethane-$1,2$-diamine)cobalt$(III)$ sulphate?

$IUPAC$ name of $[Fe(O_2)(CN)_4Cl]^{4-}$ is

Select the correct $IUPAC$ name of $[Co(NH_3)_5(CO_3)]Cl$.

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$(II)$