The cation is sodium ion and the anion is the complex ion. The ligands present are ammine, bromo, chloro, and nitro\(-N\). Here \(N\) represents that the nitro group coordinates through the \(N\) atom. The names of the ligands are written in the alphabetical order. The oxidation state of platinum is \(+2\). The oxidation state is written in Roman numerals inside the parenthesis.
$5 {Fe}^{2+}+{MnO}_{4}^{-}+8 {H}^{+} \rightarrow {Mn}^{2+}+4 {H}_{2} {O}+5 {Fe}^{3+}$