Identify the homoleptic complexes with odd number of d electrons in the central metal : (A) [FeO4]2– (B) [Fe(CN)6]3– (C) [Fe(CN)5NO]2– (D) [CoCl4]2– (E) [Co(H2O)3F3] Choose the correct answer from the

Question

Identify the homoleptic complexes with odd number of d electrons in the central metal : (A) [FeO4]2– (B) [Fe(CN)6]3– (C) [Fe(CN)5NO]2– (D) [CoCl4]2– (E) [Co(H2O)3F3] Choose the correct answer from the options given below:

(A) (A), (B) and (D) only
(B) (A), (C) and (E) only
(C) (B) and (D) only
(D) (C) and (E) only

Prashant Kotian · Accepted Answer

Correct answer: C. Only A, B, D are homoleptic complex (contains only one type of ligands) in [FeO4]2–  Oxidation number of Fe = +6 so it has 2d electrons in [Fe(CN)6]3–  Oxidation number of Fe = +3 so it has 5d electrons in [CoCl4]2–  Oxidation number of Fe = +2 so it has 7d electrons Ans.(3)

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