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Find the Effective Atomic Number (EAN) of the central metal in the stable organometallic compound FeCoordination 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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