COMEDK · Chemistry · 24. Coordination Compounds
The Crystal Field Stabilisation energy of (i) \([\text{CoF}_6]^{3-}\) and (ii) \([\text{Fe}(\text{H}_2\text{O})_6]^{3+}\) are ----- and ------- respectively.
- A (i) \(-0.4\Delta_0\) (ii) \(0\ \Delta_0\)
- B (i) \(-2.8\ \Delta_0\) (ii) \(-2.4\ \Delta_0\)
- C (i) \(-0.6\ \Delta_0\) (ii) \(0.4\ \Delta_0\)
- D (i) \(2.8\ \Delta_0\) (ii) \(2.4\ \Delta_0\)
Answer & Solution
Correct Answer
(A) (i) \(-0.4\Delta_0\) (ii) \(0\ \Delta_0\)
Step-by-step Solution
Detailed explanation
For the complex \([\text{CoF}_6]^{3-}\): The oxidation state of Co is \(+3\). The electronic configuration of \(\text{Co}^{3+}\) is \(3d^6\). Since \(\text{F}^-\) is a weak field ligand, the complex is high-spin. The electrons are distributed in the \(t_{2g}\) and \(e_g\)…
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