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Question

Chemistry Question on coordination compounds

The complex that has highest crystal feild splitting energy (Δ)(\Delta ), is :

A

K3[Co(CN)6]{K_3[Co(CN)_6]}

B

[Co(NH3)5(H2O)]Cl3{[Co(NH3)_5(H2O)]Cl3}

C

K2[CoCl4]{K2[CoCl4]}

D

[Co(NH3)5Cl]Cl2{[Co(NH3)_5Cl]Cl2}

Answer

K3[Co(CN)6]{K_3[Co(CN)_6]}

Explanation

Solution

As complex K3[Co(CN)6]{K_3[Co(CN)_6]} have CN−{CN^{-}} ligand which is strongfield ligand amongst the given ligands in other complexes.