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(C) $Mn$ has the electronic configuration $[Ar] 3d^5 4s^2$. $Mn^{2+}$ has the configuration $[Ar] 3d^5$,which is a half-filled $d$-orbital configurati

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$Mn^{3+}$ is more stable than $Mn^{2+}$

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(C) $Mn$ has the electronic configuration $[Ar] 3d^5 4s^2$. $Mn^{2+}$ has the configuration $[Ar] 3d^5$,which is a half-filled $d$-orbital configuration,making it extra stable. $Mn^{3+}$ has the configuration $[Ar] 3d^4$. Due to the extra stability of the half-filled $d^5$ subshell,$Mn^{2+}$ is more stable than $Mn^{3+}$. Therefore,the statement that $Mn^{3+}$ is more stable than $Mn^{2+}$ is incorrect.

Among the following,the incorrect statement about transition metals is:

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