Sc (Z = 21) is a transition element but Zn | vedclass

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(B) transition element is defined as an element which has an incompletely filled $d$-orbital in its ground state or in any of its oxidation states.The

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in case of $Sc, 3d$ orbitals are partially filled but in $Zn$ these are filled.

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(B) transition element is defined as an element which has an incompletely filled $d$-orbital in its ground state or in any of its oxidation states.The electronic configuration of $Sc \ (Z = 21)$ is $[Ar] \ 3d^{1} 4s^{2}$. Since the $3d$ orbital is partially filled,it is a transition element.The electronic configuration of $Zn \ (Z = 30)$ is $[Ar] \ 3d^{10} 4s^{2}$. Since the $3d$ orbital is completely filled in the ground state as well as in its common oxidation state $(Zn^{2+}: 3d^{10})$,it is not considered a transition element.

$Sc \ (Z = 21)$ is a transition element but $Zn \ (Z = 30)$ is not because

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