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To justify the color difference between \([FeF_6]^{3-}\) and \([CoF_6]^{3-}\), we need to analyze their electronic structures and crystal field splitting in the octahedral ligand field. ### Step 1: Oxidation States and Electronic Configurations - Iron Complex \([FeF_6]^{3-}\): - Fe in \([FeF_6]^{3-}\) is in the +3 oxidation state. - Electronic configuration of Fe³⁺: \( [Ar] 3d^5 \). - Fluoride (F⁻) is a weak field ligand, ____ ______ _________ ___ ______.
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