Which of the following is a transition elemen | vedclass

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(A) 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.$Au

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$Au$

Vedclass · Answer

(A) 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.$Au$ (Gold) has the ground state electronic configuration $[Xe] 4f^{14} 5d^{10} 6s^1$. However,in its $+3$ oxidation state,it has the configuration $[Xe] 4f^{14} 5d^8$,which has an incompletely filled $d$-orbital.$Zn$,$Cd$,and $Hg$ belong to group $12$ and have the general electronic configuration $(n-1)d^{10} ns^2$. They do not have incompletely filled $d$-orbitals in their ground state or common oxidation states $(+2)$,and thus are not considered transition elements.Therefore,$Au$ is the correct answer.

Which of the following is a transition element as per the ground state electronic configuration?

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