Which of the following transition metal catio | vedclass

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(A) To determine the number of unpaired electrons,we look at the electronic configuration of the ions:$1$. $Mn^{2+}$ $(Z=25)$: The configuration is $[

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$Mn^{2+}$

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(A) To determine the number of unpaired electrons,we look at the electronic configuration of the ions:$1$. $Mn^{2+}$ $(Z=25)$: The configuration is $[Ar] 3d^5$. It has $5$ unpaired electrons.$2$. $Fe^{2+}$ $(Z=26)$: The configuration is $[Ar] 3d^6$. It has $4$ unpaired electrons.$3$. $Co^{2+}$ $(Z=27)$: The configuration is $[Ar] 3d^7$. It has $3$ unpaired electrons.$4$. $Ni^{2+}$ $(Z=28)$: The configuration is $[Ar] 3d^8$. It has $2$ unpaired electrons.Therefore,$Mn^{2+}$ has the maximum number of unpaired electrons.

Which of the following transition metal cations has the maximum number of unpaired electrons?

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