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What is the IUPAC name of the coordination compound K3[Fe(CN)6]?

1. Tripotassium hexacyanoiron (II)
2. Potassium hexacyanoiron (II)
3. Potassium hexacyanoferrate (III)
4. Potassium hexacyanoferrate (II)

Correct answer: Potassium hexacyanoferrate (III)

Solution

The correct option is right because the compound contains iron in the +3 oxidation state, indicated by the 'III' in the name, and 'hexacyanoferrate' correctly describes the complex ion with six cyanide ligands coordinated to the iron.

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