Which statement is incorrect for the electron | vedclass

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Question

(A) The electronic configuration $[Xe]\, 4f^{7}\, 5d^{1}\, 6s^{2}$ corresponds to Gadolinium ($Gd$,atomic number $64$).$Gd$ belongs to the lanthanoid

Vedclass · Accepted Answer

It is placed in the $d-$block,$IIIB$ group,$6^{th}$ period.

Vedclass · Answer

(A) The electronic configuration $[Xe]\, 4f^{7}\, 5d^{1}\, 6s^{2}$ corresponds to Gadolinium ($Gd$,atomic number $64$).$Gd$ belongs to the lanthanoid series,which are $f-$block elements,not $d-$block elements.Therefore,the statement that it is placed in the $d-$block is incorrect.$Gd$ has $7$ unpaired electrons in the $4f$ orbital and $1$ in the $5d$ orbital,totaling $8$ unpaired electrons,which is the maximum for lanthanoids.It is a naturally occurring element.

Which statement is incorrect for the electronic configuration $[Xe]\, 4f^{7}\, 5d^{1}\, 6s^{2}$?

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