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CGP EDU Academic Team
Published on: August 12, 2026
From the stability constant (hypothetical values), given below, predict which is the most stable complex ?
A
Cu2+ + 4NH3 
[Cu(NH3)4]2+ , K = 4.5 × 1011
[Cu(NH3)4]2+ , K = 4.5 × 1011
B
C
Cu2+ 4CN– 
[Cu(CN)4]–, K = 2.0 × 1027
[Cu(CN)4]–, K = 2.0 × 1027
D
Cu2+ + 4H2O 
[Cu(H2O)4]2+, K = 9.5 × 108
[Cu(H2O)4]2+, K = 9.5 × 108
Text Solution
Verified by ExpertsThe correct answer is:
B
K ∝ stability.
Section (F) : Isomerism in Coordination compounds
(Structural Isomerism, Stereoisomerism, Geometrical Isomerism, Optical Isomerism)
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