Determine the oxidation state of $Cr$ in $[Cr(NH_3)_4Cl_2]^+$.

What is the oxidation number of $Ru$ in $[Ru(NH_{3})_{5}H_{2}O]Cl_{2}$?

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

The oxidation state of cobalt in the complex $[Co(NH_3)_6]Cl_3$ is ........ .

Identify the formula of $\text{Bis(ethylenediamine)dithiocyanatoplatinum(IV) ion}$ from the following.

Write the $IUPAC$ names of the following coordination compounds:
$(i)$ $[Co(NH_3)_6]Cl_3$
$(ii)$ $[Co(NH_3)_5Cl]Cl_2$
$(iii)$ $K_3[Fe(CN)_6]$
$(iv)$ $K_3[Fe(C_2O_4)_3]$
$(v)$ $K_2[PdCl_4]$
$(vi)$ $[Pt(NH_3)_2Cl(NH_2CH_3)]Cl$