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Which of the following complexes formed ...

Which of the following complexes formed by `Cu^(2+)` ions is most stable ?

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The correct Answer is:
B
Greater the value of Klog greater will be stability of complex compound formed For reaction,

For this reaction, Klog has highest value among the given four reactions. Hence, K will also be higher among these four i.e., stability of the complexes will be highest among these four complexes.
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