The most stable oxidation state of Cr in aque | vedclass

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(B) The electronic configuration of $Cr$ is $[Ar] 3d^5 4s^1$. In an aqueous medium,the $Cr^{3+}$ ion is the most stable oxidation state. This is becau

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$Cr^{3+}$

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(B) The electronic configuration of $Cr$ is $[Ar] 3d^5 4s^1$. In an aqueous medium,the $Cr^{3+}$ ion is the most stable oxidation state. This is because the $Cr^{3+}$ ion has a $t_{2g}^3$ configuration,which corresponds to a half-filled $t_{2g}$ subshell,providing extra stability due to crystal field stabilization energy in octahedral complexes.

The most stable oxidation state of $Cr$ in aqueous medium is

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