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The correct order of the number of unpai...

The correct order of the number of unpaired electrons in the given complexes is
(A) `[Fe(CN)_6]^(3-)`
(B) `[FeF_6]^(3-)`
(C) `[COF_6]^(3-)`
(D) `[Cr("oxalate")_3]^(3-)`
(E) `[Ni(CO)_4]`
Choose the correct answer from the options given below:

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