1.

Which of the following complexes has maximum CFSE?

Answer»

`K_(3)[Fe(CN)_(6)]`
`K_(3)[Co(Ox)_(3)]`
`K_(3)[CoF_(6)]`
`K_(3)[Co(CN)_(6)]`

SOLUTION :Among Li & Na, Na is more ELECTROPOSITIVE
Among F, Cl & Br, Fis most ELECTRONEGATIVE
So, Na& F will have maxima electronegativity difference.
`{:("EN value=",F,Cl,Br,I,Li,Na),(,4,3,2.8,2.5,1,0.9):}`


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