1.

Which one of the following arrangements does not represent the correct order of the property stated against it?A. `Ni^(2+)ltCo^(2+)ltFe^(2+)ltMn^(2+):` ionic sizeB. `Co^(3+)ltFe^(3+)ltSc^(3+):` stability in aqueous solutionC. `ScltTiltCrltMn:` number of oxidation statesD. `V^(2+)ltCr^(2+)ltMn^(2+)ltFe^(2+)`: paramagnetic behaviour

Answer» Correct Answer - B::D
On the basis of `CFSE`, stability of `Co^(3+)` is highest and stability of `Sc^(3+)` is minimum among `Co^(+3), Fe^(+3),Cr^(+3), Sc^(+3)`
`{:("Paramagnetic behaviour"),(V^(2+)ltCr^(2+)ltFe^(2+) lt Mn^(2+)):}`


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