In the complex K2Fe[Fe(CN)6] : — Coordination Compounds Chemistry Question

💡 Solution & Explanation

Step 1: Analyze the formula K2Fe[Fe(CN)6], which represents a potassium iron hexacyanoferrate salt. Step 2: For electrostatic neutrality, the sum of charges must be zero: 2*(K^+) + Fe_outer + Fe_inner + 6*(CN^-) = 0 => 2 + Fe_outer + Fe_inner - 6 = 0 => Fe_outer + Fe_inner = +4. Step 3: In this specific compound, both the outer and inner iron atoms exist in the +2 oxidation state. Therefore, both iron atoms are in the same oxidation state, matching option (a).