The IUPAC name of K₃[Fe(CN)₆] is:
AHexacyanoferrate(III) potassium
BPotassium hexacyanidoferrate(III) — anionic complex ends in '-ate' for Fe (ferrate)
CPotassium ironhexacyanide
DTripotassium hexacyanoferrate
Answer & Solution
Correct answer: B. Potassium hexacyanidoferrate(III) — anionic complex ends in '-ate' for Fe (ferrate)
Anionic complex → metal name takes the **-ate** suffix (Fe → ferrate). Oxidation state (III) determined by counter ion (3 K⁺ → complex = 3−; each CN⁻ = −1, so Fe + 6(−1) = −3 → Fe = +3). Hence **potassium hexacyanidoferrate(III)**.
Related questions
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