JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
The crystal field splitting energy of \(\left[\operatorname{Co}(\text { oxalate })_3\right]^{3-}\) complex is 'n' times that of the \(\left[ Cr (\text { oxalate })_3\right]^{3-}\) complex. Here ' n ' is [Assume \(\Delta_0 \gg P\) ]
- A 1
- B 2
- C 3
- D 4
Answer & Solution
Correct Answer
(B) 2
Step-by-step Solution
Detailed explanation
Pairing energy neglected w.r.t. \(\Delta_0\) \(\left[ Co ( ox )_3\right]^{3-}: Co ^{+3}: d ^6 ; t _2 g^{2,2,2} eg ^{0,0}\) \(CFSE =6 \times\left(-0.4 \Delta_0\right)=-2.4 \Delta_0\) \(\left[ Cr \left( ox _3\right)\right]^{3-}: Cr ^{+3}: d ^3 ; t _2 g^{1,1,1} eg ^{0,0}\)…
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