JEE Main 2022 · 29 Jul · Shift 1 · Chemistry Q90

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ChemistryInteger+4 / -1Question 90 of 90

$\mathrm{[Fe(CN)_6]^{3-}}$ should be an inner orbital complex. Ignoring the pairing energy, the value of crystal field stabilization energy for this complex is (−) _______ Δ $_o$ . (Nearest integer)

Your answer

Answer and worked solution

Official answer: 2

Low spin d⁵. Fe³⁺ with strong-field CN⁻ is $t_{2g}^5e_g^0$ : CFSE $=5\times(-0.4\Delta_o)=-2.0\Delta_o$ .

Answer: 2

Topics:Crystal field theory

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JEE Main 2022 · 29 Jul · Shift 1, Chemistry question 90