Consider the following complexes. [CoCl(NH3)5]2+, [Co(CN)6]3–, (A) (B) [Co(NH3)5(H2O)]3+, [Cu(H2O)4]2+ (C) (D) The correct order of A, B, C and D in terms of wavenumber of light absorbed is : (A) C

Question

Consider the following complexes. [CoCl(NH3)5]2+, [Co(CN)6]3–, (A) (B) [Co(NH3)5(H2O)]3+, [Cu(H2O)4]2+ (C) (D) The correct order of A, B, C and D in terms of wavenumber of light absorbed is :

(A) C < D < A < B
(B) D < A < C < B
(C) A < C < B < D
(D) B < C < A < D

Prashant Kotian · Accepted Answer

Correct answer: B. As ligand field increases, light of more energy is absorbed Energy  wave number  

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