MHT CET 2024 Chemistry question

Which among the following is a correct decreasing order of thermodynamic stability of the complexes ?

(A)
(B)[Co(NH_3)_6]^{3+} > [Cu(CN)_4]^{2-} > [Ag(CN)_2]^{-}Correct
(C)
(D)

Answer: (B)

Solution

Thermodynamic stability of a complex is measured by its stability (formation) constant ; the larger the constant, the more stable the complex. For a given type of ligand, the stability increases with increasing charge (oxidation state) of the central metal ion because a more highly charged, smaller ion attracts

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Question ID VK-096656