Given below are two statements:
Statement I: $Cr^{2+}$ is oxidising agent and $Mn^{3+}$ is a reducing agent in

Question

Given below are two statements:
Statement I: $Cr^{2+}$ is oxidising agent and $Mn^{3+}$ is a reducing agent in nature.
Statement II: $Sc^{3+}$ compounds are repelled by the applied magnetic field.
In light of the above statements, choose the most appropriate answer from the options given below:

Accepted Answer

Statement I is incorrect: $Cr^{2+}$ acts as a strong reducing agent because losing an electron oxidises it to $Cr^{3+}$, which has a highly stable half-filled $t_{2g}^3$ configuration. On the other hand, $Mn^{3+}$ acts as a strong oxidising agent because accepting an electron reduces it to $Mn^{2+}$, which has a highly stable half-filled $d^5$ configuration .
Statement II is correct: Scandium in its +3 oxidation state ($Sc^{3+}$) has a $3d^0$ electronic configuration. Since it has zero unpaired electrons, it is diamagnetic. Diamagnetic substances are repelled by an applied magnetic field .

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