Chemistry - Coordination Chemistry Question with Solution | TestHub

The complex is $[Pt(N{H}_3{)}_3(Br)(N{O}_2)(Cl)]Cl$.

1. Ligands: Triammine ($N{H}_3$), Bromido ($B{r}^{-}$), Nitro ($N{O}_2^{-}$), Chlorido ($C{l}^{-}$).

2. Alphabetical order for ligands: Bromido, Chlorido, Nitro, Triammine.

3. Oxidation state of Pt: Let it be $x$. $x+3(0)+(-1)+(-1)+(-1)=+1$ (due to $C{l}^{-}$ outside). So, $x-3=+1$, $x=+4$.

4. Name: Triamminebromidochloridonitroplatinum(IV) chloride.

The final answer is $\boxed{C}$