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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 -

1. E < A < D < C < B
2. E < A < B < D < C
3. A < E, C < B < D
4. A < E < D < C < B

Correct answer: E < A < D < C < B

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