1.

For the four successive transition elements (Cr, Mn, Fe, and Co), the stability of `+2` oxidation state will be there in which of the following order ? `(At. Nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)`A. `Cr gt Mn gt Co gt Fe`B. `Mn gt Fe gt Cr gt Co`C. `Fe gt Mn gt Co gt Cr`D. `CogtMngtFegtCr`

Answer» Correct Answer - b
`Mn^(2+)` is not most sttable because it has half -filled d-orbitals.


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