Which of the following graph is correct repre | vedclass

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$(d)$ Magnetic moment $= \sqrt {n(n +2)} BM$
$N :$ Number of unpaired $e^-$
As atomic number increases in $d-block $ element number of unpaired $e^-

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$(d)$ Magnetic moment $= \sqrt {n(n +2)} BM$
$N :$ Number of unpaired $e^-$
As atomic number increases in $d-block $ element number of unpaired $e^-$ first  increases upto middle then decreases.

Which of the following graph is correct representation between atomic number $(Z)$ and magnetic moment of $d-block$ elements? [Outer electronic configuration : $(n -1)d^x\, ns^{1\, or \,2}$]

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