Looking for classes? Ksquare Career Institute, Bengaluru →
Given below are two statements:
Statement I: $Cr^{2+}$ is oxidising and $Mn^{3+}$ is reducing in nature.
Statement II: $Sc^{3+}$ compounds are repelled by the applied magnetic field.
In the light of the above statements, choose the most appropriate answer from the options given below:
Detailed Solution
$Cr^{2+}$ ($[Ar]3d^4$) is reducing as it changes to $d^3$ ($t_{2g}^3$). $Mn^{3+}$ is oxidising as it changes to $Mn^{2+}$ ($[Ar]3d^5$, extra stable). So Statement I is incorrect. $Sc^{3+}$ ($[Ar]$) has no unpaired electrons, is diamagnetic and is repelled by a magnetic field, so Statement II is correct.