The octahedral crystal field splitting (Δ₀) of d orbital energies of the following metal ions decreases in… · ABC26IN0604
Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Coordination Compounds – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Medium
The octahedral crystal field splitting $\left(\Delta_{0}\right)$ of d orbital energies of the following metal ions decreases in the order
(a)$\mathrm{Co}^{2+}>\mathrm{Co}^{3+}>\mathrm{Rh}^{3+}$
(b)$\mathrm{Rh}^{3+}>\mathrm{Co}^{3+}>\mathrm{Co}^{2+}$
(c)$\mathrm{Rh}^{3+}>\mathrm{Co}^{2+}>\mathrm{Co}^{3+}$
(d)$\mathrm{Co}^{3+}>\mathrm{Co}^{2+}>\mathrm{Rh}^{3+}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Δo rises with oxidation state and down the group: Rh³⁺ > Co³⁺ > Co²⁺ (b).
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