Which of the following graphs is the correct | vedclass

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(D) The magnetic moment is given by the formula: $\mu = \sqrt{n(n + 2)} \ BM$,where $n$ is the number of unpaired electrons.As the atomic number $(Z)$

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(D) The magnetic moment is given by the formula: $\mu = \sqrt{n(n + 2)} \ BM$,where $n$ is the number of unpaired electrons.As the atomic number $(Z)$ increases across a $d-$block series,the number of unpaired electrons first increases as the $d-$orbitals are filled up to the middle (i.e.,$d^5$ configuration).After the middle of the series,the number of unpaired electrons begins to decrease as the $d-$orbitals start pairing up.Therefore,the magnetic moment also follows the same trend: it increases up to the middle of the series and then decreases.This trend is correctly represented by the graph in option $D$.

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

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