Write equations for the stepwise formation of each of the following complex ions. a. \(\mathrm{Ni}(\mathrm{CN})_{4}^{2-}\) b. \(\mathrm{V}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}{ }^{3-}\)

The stepwise formation equations for the given complex ions are: a. For \(\mathrm{Ni}(\mathrm{CN})_{4}^{2-}\): 1. \(\mathrm{Ni^{2+}} + \mathrm{CN^-} \rightarrow \mathrm{NiCN^{+}}\) 2. \(\mathrm{NiCN^{+}} + \mathrm{CN^-} \rightarrow \mathrm{Ni(CN)_{2}}\) 3. \(\mathrm{Ni(CN)_{2}} + \mathrm{CN^-} \rightarrow \mathrm{Ni(CN)_{3}^{-}}\) 4. \(\mathrm{Ni(CN)_{3}^{-}} + \mathrm{CN^-} \rightarrow \mathrm{Ni(CN)_{4}^{2-}}\) b. For \(\mathrm{V}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}{ }^{3-}\): 1. \(\mathrm{V^{3+}} + \mathrm{C_{2}O_{4}^{2-}} \rightarrow \mathrm{VC_{2}O_{4}^{+}}\) 2. \(\mathrm{VC_{2}O_{4}^{+}} + \mathrm{C_{2}O_{4}^{2-}} \rightarrow \mathrm{V(C_{2}O_{4})_{2}^{-}}\) 3. \(\mathrm{V(C_{2}O_{4})_{2}^{-}} + \mathrm{C_{2}O_{4}^{2-}} \rightarrow \mathrm{V(C_{2}O_{4})_{3}^{3-}}\)