Arrange the Three Complexes Listed Below in Order of Increasing

question 27

Multiple Choice

Arrange the three complexes listed below in order of increasing crystal field energy , Δ . [Fe(H₂O) ₆]³⁺ [Fe(H₂O) ₆]²⁺ [Ru(H₂O) ₆]³⁺

• A) (smallest Δ ) [Fe(H₂O)₆]³+ < [Fe(H₂O)₆]²+ < [Ru(H₂O)₆]³+ (greatest Δ)
• B) (smallest Δ ) [Fe(H₂O)₆]²+ < [Fe(H₂O)₆]³+ < [Ru(H₂O)₆]³+ (greatest Δ)
• C) (smallest Δ ) [Ru(H₂O)₆]³+ < [Fe(H₂O)₆]³+ < [Fe(H₂O)₆]²+ (greatest Δ)
• D) (smallest Δ ) [Ru(H₂O)₆]³+ < [Fe(H₂O)₆]²+ < [Fe(H₂O)₆]³+ (greatest Δ)
• E) (smallest Δ ) [Fe(H₂O)₆]³+ < [Ru(H₂O)₆]³+ < [Fe(H₂O)₆]²+ (greatest Δ)

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