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Which is least stable in aqueous medium...

Which is least stable in aqueous medium

A

`Fe^(2+)`

B

`CO^(+2)`

C

`Ni^(+2)`

D

`Mn^(+2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Fe^(2+)` quickly oxidizes to `Fe^(3+)` in aqueous medium.
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