Which of the following complexes clearly violates the Effective Atomic Number (EAN) rule? | Coordination Compounds — Chem-Mantra | Chem-Mantra

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Question

Which of the following complexes clearly violates the Effective Atomic Number (EAN) rule?

Answer: D

💡 Solution & Explanation

For $[Fe(CN)_6]^{3-}$, Fe is +3. EAN = $26 - 3 + 12 = 35$, which does not equal 36 (Kr) [29, 30].

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