Let the oxidation state of \(P t=x\), then
\((x \times 1)+3 \times(0)+(1 \times-1)+(1 \times-1)+(1 \times-1)=+1\)
\(x-3=+1\)
\(x=+4\)
Thus, the \(I U P A C\) name of the complex \(\left[P t(N H)_{3} B r\left(N O_{2}\right) C l\right] C l\) is triamine bromidochloridonitro platinum \((IV)\) chloride as the names of the different ligands are arranged alphabetically.
$(1) $ $[Ag(NH_3)_2]^{+}$ - રેખીય
$ (2) $ $[MnCl^4]^{2-}$ - ચતુષ્ફલકીય
$(3) $ $[Cu(NH_3)_4]^{2+}$ - ચોરસ સમતલ
$(4) $ $[Ni(CN)_4]^{2-}$ - ચોરસ સમતલ