D-And F-Block Elements Ques 239

Question: Which of the following ions form most stable complex compound

[MP PMT 1995]

Options:

A) Cu++

B) Ni++

C) Fe++

D) Mn++

Show Answer

Answer:

Correct Answer: A

Solution:

The magnitude of stability constants for some divalent metal ions of the first transition series with oxygen or nitrogen donar ligands increases in the order. Mn2+<Fe2+<Co2+<Ni2+<Cu2+<Zn2+



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