The isoelectronic pair of ions is −

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The isoelectronic pair of ions is $-$

ChemistryClassification of Elements and Periodicity in PropertiesKVPYKVPY 2012 (SB/SX)

Options:

A $\mathrm{Sc}^{2+}$ and $\mathrm{V}^{3+}$
B $\mathrm{Mn}^{2+}$ and $\mathrm{Fe}^{3+}$
C $\mathrm{Mn}^{3+}$ and $\mathrm{Fe}^{2+}$
D $\mathrm{Ni}^{3+}$ and $\mathrm{Fe}^{2+}$

Solution:

2495 Upvotes Verified Answer

The correct answer is: $\mathrm{Mn}^{2+}$ and $\mathrm{Fe}^{3+}$

$\mathrm{Mn}^{+2}=23 \mathrm{e}^{-}$
$\mathrm{Fe}^{+3}=23 \mathrm{e}^{-}$

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