Question

The name of complex ion, $\left[Fe\right(CN{)}_6{]}^{3-}$ is:

• A. Hexacyanoiron (III) ion
• B. Hexacyanitoferrate (III) ion
• C. Tricyanoferrate (III) ion
• D. Hexacyanidoferrate (III) ion

Answer 1

The correct option is D Hexacyanidoferrate (III) ion

In the given complex there are 6 Cyanide ligands and the oxidation number of Fe is M-6= -3 This implies Fe is in +3 oxidation state and Hence the IUPAC name of the complex should be hexacyanidoferrate(III).Hence option D is correct.