Consider Two Complexes: (I) [Fe(CN)₆]^4, and (II) [Fe(H₂O)₆]^2

question 104

Multiple Choice

Consider two complexes: (I) [Fe(CN) ₆]^4, and (II) [Fe(H₂O) ₆]^2. In view of the spectrochemical series, which one of the following sets of predictions is most likely correct? Spectrochemical Series

• A)I is low spin, II is high spin, and II absorbs light at the shorter wavelength.
• B)I is low spin, II is high spin, and I absorbs light at the shorter wavelength.
• C)I is high spin, II is low spin, and I absorbs light at the shorter wavelength.
• D)Both have six d electrons, so both are high spin.
• E)Both have six d electrons, so both are low spin.

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