Which of the following pairs involves isoelec | vedclass

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(B) Isoelectronic ions are those that have the same number of electrons. Atomic number of $Mn$ is $25$,so $Mn^{2+}$ has $25 - 2 = 23$ electrons. Atomi

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$Mn^{2+}$ and $Fe^{3+}$

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(B) Isoelectronic ions are those that have the same number of electrons. Atomic number of $Mn$ is $25$,so $Mn^{2+}$ has $25 - 2 = 23$ electrons. Atomic number of $Fe$ is $26$,so $Fe^{3+}$ has $26 - 3 = 23$ electrons. Since both $Mn^{2+}$ and $Fe^{3+}$ have $23$ electrons,they are isoelectronic. Therefore,the correct option is $(b)$.

Which of the following pairs involves isoelectronic ions?

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