The wavelength of light absorbed for the following complexes are in the order. 3 6 (I) [Co(NH ) ] ; 2 (II) [Co(H O) ] ; 3– (III) [Co(CN) ] ; 3 5 (IV) [Co(NH ) (H O)] ; 6 (V) [CoF ] (A) III

Question

The wavelength of light absorbed for the following complexes are in the order. 3 6 (I) [Co(NH ) ] ; 2 (II) [Co(H O) ] ; 3– (III) [Co(CN) ] ; 3 5 (IV) [Co(NH ) (H O)] ; 6 (V) [CoF ]

(A) III < I < II < IV < V
(B) III < I < IV < V < II
(C) III < IV < I < II < V
(D) III < I < IV < II < V

Prashant Kotian · Accepted Answer

Correct answer: D. Wavelength of light absorbed increases as C.F.S.E of complex decreases. [Co(CN)6] 3– has maximum CFSE [CoF6] 3– has least CFSE Ligand field strength ; C.F.S.E  Correct wavelength order. V > II > IV > I > III

💡 Solution & Explanation

Practice 22,000+ questions like this