Find the Effective Atomic Number (EAN) of the central metal in the stable organometallic compound Fe — Coordination Compounds Chemistry Question
Question
Find the Effective Atomic Number (EAN) of the central metal in the stable organometallic compound Ferrocene, $Fe(\eta^5-C_5H_5)_2$.
Answer: C
💡 Solution & Explanation
Fe atomic number is 26. Oxidation state is +2. Each $\eta^5-C_5H_5^-$ donates 6 $\pi$-electrons. EAN = $26 - 2 + (2 \times 6) = 36$ [24, 25].
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