1.

Which of the following ions form most stable complex compound

Answer»

`Cu^(++)`
`Ni^(++)`
`Fe^(++)`
`Mn^(++)`

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.
`Mn^(2+)ltFe^(2+)ltCo^(2+)ltNi^(2+)ltCu^(2+)ltZn^(2+)`


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