D-And F-Block Elements Ques 239
Question: Which of the following ions form most stable complex compound
[MP PMT 1995]
Options:
A) $ C{{u}^{++}} $
B) $ N{{i}^{++}} $
C) $ F{{e}^{++}} $
D) $ M{{n}^{++}} $
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. $ M{{n}^{2+}}<F{{e}^{2+}}<C{{o}^{2+}}<N{{i}^{2+}}<C{{u}^{2+}}<Z{{n}^{2+}} $
