Which transition element does not exhibit var | vedclass

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(D) Transition elements are characterized by the presence of partially filled $d$-orbitals,which allow them to exhibit variable oxidation states. Howe

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Scandium

Vedclass · Answer

(D) Transition elements are characterized by the presence of partially filled $d$-orbitals,which allow them to exhibit variable oxidation states. However,$Scandium$ ($Sc$,atomic number $21$) has an electronic configuration of $[Ar] 3d^1 4s^2$. In its compounds,it loses all three valence electrons to form the $Sc^{3+}$ ion,which has a stable noble gas configuration $([Ar])$. Because it does not have other stable oxidation states,$Scandium$ is the only transition element among the choices that does not exhibit variable oxidation states. Therefore,the correct option is $D$.

Which transition element does not exhibit variable oxidation states?

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