Coordination Compounds

\(\mathrm{C}_{2} \mathrm{O}_{4}{ }^{2-}, \mathrm{NO}_{2}{ }^{-}, \mathrm{NCS}^{-}\)

\(\mathrm{C}_{2} \mathrm{O}_{4}{ }^{2-}\), ethylene diammine, \(\mathrm{H}_{2} \mathrm{O}\)

\(\mathrm{NO}_{2}^{-}, \mathrm{C}_{2} \mathrm{O}_{4}{ }^{2-}\), EDTA \(^{4-}\)

\(\mathrm{EDTA}^{4-}, \mathrm{NCS}^{-}, \mathrm{C}_{2} \mathrm{O}_{4}{ }^{2-}\)