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JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
In which of the following octahedral complex species the magnitude of \({\Delta _0}\) will be maximum ?
- A \([Co(H_2O)_ 6]^{2+}\)
- B \([Co(CN)_6 ]^{3-}\)
- C \([Co(C_2O_4)_3]^{3-}\)
- D \([Co(NH_3)_6]^{3+}\)
Answer & Solution
Correct Answer
(B) \([Co(CN)_6 ]^{3-}\)
Step-by-step Solution
Detailed explanation
Crystal field splitting depends upon the nature of ligand . The nature of ligand \(\Delta \) decreases as shown below \(C_2O_4^- < H_2O < NH_3 < CN^-\) hence the crystal field splitting will be maximum for \([Co(CN)_6]^{3-}\)
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