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Chemistry Question on coordination compounds

Which of the following complex will show largest splitting of dd-orbitals?

A

[Fe(C2O4)3]3−\left[ F _{ e }\left( C _2 O _4\right)_3\right]^{3-}

B

[Fe(CN)6]3−\left[ F _{ e }( CN )_6\right]^{3-}

C

[Fe(NH3)6]3+\left[ F _{ e }\left( NH _3\right)_6\right]^{3+}

D

[FeF6]3−\left[ F _{ e } F _6\right]^{3-}

Answer

[Fe(CN)6]3−\left[ F _{ e }( CN )_6\right]^{3-}

Explanation

Solution

CN is a strong field ligand so maximum splitting in d orbitals take place.

So, the correct option is (B): [Fe(CN)6]3−\left[ F _{ e }( CN )_6\right]^{3-}